don't set output on every run

Adding stale checks to issues

.github/workflows/codeql.yml

@@ -0,0 +1,48 @@
+name: "CodeQL"
+
+on:
+  push:
+    branches: [ "main" ]
+  pull_request:
+    branches: [ "main" ]
+  schedule:
+    - cron: '21 0 * * 4'
+
+jobs:
+  analyze:
+    name: Analyze
+    runs-on: 'ubuntu-latest'
+    timeout-minutes: 360
+    permissions:
+      # required for all workflows
+      security-events: write
+
+    strategy:
+      fail-fast: false
+      matrix:
+        language: [ 'javascript-typescript' ]
+
+    steps:
+    - name: Checkout repository
+      uses: actions/checkout@v4
+
+    # Initializes the CodeQL tools for scanning.
+    - name: Initialize CodeQL
+      uses: github/codeql-action/init@v3
+      with:
+        languages: ${{ matrix.language }}
+        # If you wish to specify custom queries, you can do so here or in a config file.
+        # By default, queries listed here will override any specified in a config file.
+        # Prefix the list here with "+" to use these queries and those in the config file.
+
+        # For more details on CodeQL's query packs, refer to: https://docs.github.com/en/code-security/code-scanning/automatically-scanning-your-code-for-vulnerabilities-and-errors/configuring-code-scanning#using-queries-in-ql-packs
+        # queries: security-extended,security-and-quality
+        config: |
+          paths-ignore: 
+            - dist/index.js
+            - dist/sourcemap-register.js
+
+    - name: Perform CodeQL Analysis
+      uses: github/codeql-action/analyze@v3
+      with:
+        category: "/language:${{matrix.language}}"

.github/workflows/stale.yaml

@@ -0,0 +1,26 @@
+name: Close stale PRs and Issues
+
+permissions:
+  issues: write
+  pull-requests: write
+
+on:
+  schedule:
+  - cron: "00 0 * * *" # runs at 00:00 daily
+
+jobs:
+  stale:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/stale@v9.0.0
+      name: Clean up stale PRs and Issues
+      with:
+        stale-pr-message: "👋 This pull request has been marked as stale because it has been open with no activity. You can: comment on the issue or remove the stale label to hold stale off for a while, add the `Keep` label to hold stale off permanently, or do nothing. If you do nothing, this pull request will be closed eventually by the stale bot. Please see CONTRIBUTING.md for more policy details."
+        stale-pr-label: "Stale"
+        exempt-pr-labels: "Keep" # a "Keep" label will keep the PR from being closed as stale
+        days-before-pr-stale: 180 # when the PR is considered stale
+        days-before-pr-close: 15 # when the PR is closed by the bot, 
+        days-before-issue-stale: 180 # prevents issues from being tagged by the bot
+        days-before-issue-close: 15 # prevents issues from being closed by the bot
+        exempt-assignees: 'advanced-security-dependency-graph'
+        ascending: true

CONTRIBUTING.md

@@ -112,8 +112,8 @@ minor/patch updates.
 To do this just checkout `main`, force-create a new annotated tag, and push it:
 
 ```
-git tag -fa v3 -m "Updating v3 to 3.0.1"
-git push origin v3 --force
+git tag -fa v4 -m "Updating v4 to 4.0.1"
+git push origin v4 --force
 ```
 
 ## Resources

README.md

@@ -1,21 +1,21 @@
 # dependency-review-action
 
 This action scans your pull requests for dependency changes, and will
-raise an error if any vulnerabilities or invalid licenses are being introduced. The action is supported by an [API endpoint](https://docs.github.com/en/rest/reference/dependency-graph#dependency-review) that diffs the dependencies between any two revisions on your default branch.
+raise an error if any vulnerabilities or invalid licenses are being introduced. The action is supported by an [API endpoint](https://docs.github.com/rest/dependency-graph/dependency-review) that diffs the dependencies between any two revisions on your default branch.
 
 The action is available for all public repositories, as well as private repositories that have GitHub Advanced Security licensed.
 
 You can see the results on the job logs:
 
-<img width="854" alt="Screen Shot 2022-03-31 at 1 10 51 PM" src="https://user-images.githubusercontent.com/2161/161042286-b22d7dd3-13cb-458d-8744-ce70ed9bf562.png">
+<img width="850" alt="GitHub workflow run log showing Dependency Review job output" src="https://user-images.githubusercontent.com/2161/161042286-b22d7dd3-13cb-458d-8744-ce70ed9bf562.png">
 
 or on the job summary:
 
-<img src="https://user-images.githubusercontent.com/7847935/182871416-50332bbb-b279-4621-a136-ca72a4314301.png">
+<img width="850" alt="GitHub job summary showing Dependency Review output" src="https://github.com/actions/dependency-review-action/assets/2161/42fbed1d-64a7-42bf-9b05-c416bc67493f">
 
 ## Installation
 
-**Please keep in mind that you need a [GitHub Advanced Security](https://docs.github.com/en/enterprise-cloud@latest/get-started/learning-about-github/about-github-advanced-security) license if you're running this action on private repositories.**
+**Please keep in mind that you need a [GitHub Advanced Security](https://docs.github.com/enterprise-cloud@latest/get-started/learning-about-github/about-github-advanced-security) license if you're running this action on private repositories.**
 
 1. Add a new YAML workflow to your `.github/workflows` folder:
 
@@ -33,16 +33,16 @@ jobs:
       - name: 'Checkout Repository'
         uses: actions/checkout@v4
       - name: 'Dependency Review'
-        uses: actions/dependency-review-action@v3
+        uses: actions/dependency-review-action@v4
 ```
 
 ### GitHub Enterprise Server
 
-This action is available in Enterprise Server starting with version 3.6. Make sure
+Make sure
 [GitHub Advanced
-Security](https://docs.github.com/en/enterprise-server@3.6/admin/code-security/managing-github-advanced-security-for-your-enterprise/enabling-github-advanced-security-for-your-enterprise)
+Security](https://docs.github.com/enterprise-server@3.8/admin/code-security/managing-github-advanced-security-for-your-enterprise/enabling-github-advanced-security-for-your-enterprise)
 and [GitHub
-Connect](https://docs.github.com/en/enterprise-server@3.6/admin/github-actions/managing-access-to-actions-from-githubcom/enabling-automatic-access-to-githubcom-actions-using-github-connect)
+Connect](https://docs.github.com/enterprise-server@3.8/admin/github-actions/managing-access-to-actions-from-githubcom/enabling-automatic-access-to-githubcom-actions-using-github-connect)
 are enabled, and that you have installed the [dependency-review-action](https://github.com/actions/dependency-review-action) on the server.
 
 You can use the same workflow as above, replacing the `runs-on` value
@@ -59,33 +59,34 @@ jobs:
       - name: 'Checkout Repository'
         uses: actions/checkout@v4
       - name: 'Dependency Review'
-        uses: actions/dependency-review-action@v3
+        uses: actions/dependency-review-action@v4
 ```
 
 ## Configuration options
 
 Configure this action by either inlining these options in your workflow file, or by using an external configuration file. All configuration options are optional.
 
-| Option                                 | Usage                                                                                                                                                                             | Possible values                                                                                              | Default value |
-| -------------------------------------- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | ------------------------------------------------------------------------------------------------------------ | ------------- |
-| `fail-on-severity`                     | Defines the threshold for the level of severity. The action will fail on any pull requests that introduce vulnerabilities of the specified severity level or higher.              | `low`, `moderate`, `high`, `critical`                                                                        | `low`         |
-| `allow-licenses`\*                     | Contains a list of allowed licenses. The action will fail on pull requests that introduce dependencies with licenses that do not match the list.                                  | Any [SPDX-compliant identifier(s)](https://spdx.org/licenses/)                                               | none          |
-| `deny-licenses`\*                      | Contains a list of prohibited licenses. The action will fail on pull requests that introduce dependencies with licenses that match the list.                                      | Any [SPDX-compliant identifier(s)](https://spdx.org/licenses/)                                               | none          |
-| `fail-on-scopes`†                      | Contains a list of strings of the build environments you want to support. The action will fail on pull requests that introduce vulnerabilities in the scopes that match the list. | `runtime`, `development`, `unknown`                                                                          | `runtime`     |
-| `allow-ghsas`                          | Contains a list of GitHub Advisory Database IDs that can be skipped during detection.                                                                                             | Any GHSAs from the [GitHub Advisory Database](https://github.com/advisories)                                 | none          |
-| `license-check`                        | Enable or disable the license check performed by the action.                                                                                                                      | `true`, `false`                                                                                              | `true`        |
-| `vulnerability-check`                  | Enable or disable the vulnerability check performed by the action.                                                                                                                | `true`, `false`                                                                                              | `true`        |
-| `allow-dependencies-licenses`\*        | Contains a list of packages that will be excluded from license checks.                                                                                                            | Any package(s) in [purl](https://github.com/package-url/purl-spec) format                                    | none          |
-| `base-ref`/`head-ref`                  | Provide custom git references for the git base/head when performing the comparison check. This is only used for event types other than `pull_request` and `pull_request_target`.  | Any valid git ref(s) in your project                                                                         | none          |
-| `comment-summary-in-pr`                | Enable or disable reporting the review summary as a comment in the pull request. If enabled, you must give the workflow or job permission `pull-requests: write`.                 | `always`, `on-failure`, `never`                                                                              | `never`       |
-| `deny-packages`                        | Any number of packages to block in a PR.                                                                                                                                          | Package(s) in [purl](https://github.com/package-url/purl-spec) format                                        | empty         |
-| `deny-groups`                          | Any number of groups (namespaces) to block in a PR.                                                                                                                               | Namespace(s) in [purl](https://github.com/package-url/purl-spec) format (no package name, no version number) | empty         |
-| `retry-on-snapshot-warnings`\*         | Enable or disable retrying the action every 10 seconds while waiting for dependency submission actions to complete.                                                               | `true`, `false`                                                                                              | `false`       |
-| `retry-on-snapshot-warnings-timeout`\* | Maximum amount of time (in seconds) to retry the action while waiting for dependency submission actions to complete.                                                              | Any positive integer                                                                                         | 120           |
+| Option                                 | Usage                                                                                                                                                                                                   | Possible values                                                                                              | Default value |
+| -------------------------------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | ------------------------------------------------------------------------------------------------------------ | ------------- |
+| `fail-on-severity`                     | Defines the threshold for the level of severity. The action will fail on any pull requests that introduce vulnerabilities of the specified severity level or higher.                                    | `low`, `moderate`, `high`, `critical`                                                                        | `low`         |
+| `allow-licenses`\*                     | Contains a list of allowed licenses. The action will fail on pull requests that introduce dependencies with licenses that do not match the list.                                                        | Any [SPDX-compliant identifier(s)](https://spdx.org/licenses/)                                               | none          |
+| `deny-licenses`\*                      | Contains a list of prohibited licenses. The action will fail on pull requests that introduce dependencies with licenses that match the list.                                                            | Any [SPDX-compliant identifier(s)](https://spdx.org/licenses/)                                               | none          |
+| `fail-on-scopes`                       | Contains a list of strings of the build environments you want to support. The action will fail on pull requests that introduce vulnerabilities in the scopes that match the list.                       | `runtime`, `development`, `unknown`                                                                          | `runtime`     |
+| `allow-ghsas`                          | Contains a list of GitHub Advisory Database IDs that can be skipped during detection.                                                                                                                   | Any GHSAs from the [GitHub Advisory Database](https://github.com/advisories)                                 | none          |
+| `license-check`                        | Enable or disable the license check performed by the action.                                                                                                                                            | `true`, `false`                                                                                              | `true`        |
+| `vulnerability-check`                  | Enable or disable the vulnerability check performed by the action.                                                                                                                                      | `true`, `false`                                                                                              | `true`        |
+| `allow-dependencies-licenses`\*        | Contains a list of packages that will be excluded from license checks.                                                                                                                                  | Any package(s) in [purl](https://github.com/package-url/purl-spec) format                                    | none          |
+| `base-ref`/`head-ref`                  | Provide custom git references for the git base/head when performing the comparison check. This is only used for event types other than `pull_request` and `pull_request_target`.                        | Any valid git ref(s) in your project                                                                         | none          |
+| `comment-summary-in-pr`                | Enable or disable reporting the review summary as a comment in the pull request. If enabled, you must give the workflow or job permission `pull-requests: write`.                                       | `always`, `on-failure`, `never`                                                                              | `never`       |
+| `deny-packages`                        | Any number of packages to block in a PR.                                                                                                                                                                | Package(s) in [purl](https://github.com/package-url/purl-spec) format                                        | empty         |
+| `deny-groups`                          | Any number of groups (namespaces) to block in a PR.                                                                                                                                                     | Namespace(s) in [purl](https://github.com/package-url/purl-spec) format (no package name, no version number) | empty         |
+| `retry-on-snapshot-warnings`\*         | Enable or disable retrying the action every 10 seconds while waiting for dependency submission actions to complete.                                                                                     | `true`, `false`                                                                                              | `false`       |
+| `retry-on-snapshot-warnings-timeout`\* | Maximum amount of time (in seconds) to retry the action while waiting for dependency submission actions to complete.                                                                                    | Any positive integer                                                                                         | 120           |
+| `warn-only`+                           | When set to `true`, the action will log all vulnerabilities as warnings regardless of the severity, and the action will complete with a `success` status. This overrides the `fail-on-severity` option. | `true`, `false`                                                                                              | `false`       |
 
 \*not supported for use with GitHub Enterprise Server
 
-†will be supported with GitHub Enterprise Server 3.8
++when `warn-only` is set to `true`, all vulnerabilities, independently of the severity, will be reported as warnings and the action will not fail.
 
 ### Inline Configuration
 
@@ -105,7 +106,7 @@ jobs:
       - name: 'Checkout Repository'
         uses: actions/checkout@v4
       - name: Dependency Review
-        uses: actions/dependency-review-action@v3
+        uses: actions/dependency-review-action@v4
         with:
           fail-on-severity: moderate
 
@@ -128,7 +129,7 @@ Start by specifying that you will be using an external configuration file:
 
 ```yaml
 - name: Dependency Review
-  uses: actions/dependency-review-action@v3
+  uses: actions/dependency-review-action@v4
   with:
     config-file: './.github/dependency-review-config.yml'
 ```
@@ -154,7 +155,11 @@ For more examples of how to use this action and its configuration options, see t
 
 ## Blocking pull requests
 
-The Dependency Review GitHub Action check will only block a pull request from being merged if the repository owner has required the check to pass before merging. For more information, see the [documentation on protected branches](https://docs.github.com/en/repositories/configuring-branches-and-merges-in-your-repository/defining-the-mergeability-of-pull-requests/about-protected-branches#require-status-checks-before-merging).
+The Dependency Review GitHub Action check will only block a pull request from being merged if the repository owner has required the check to pass before merging. For more information, see the [documentation on protected branches](https://docs.github.com/repositories/configuring-branches-and-merges-in-your-repository/defining-the-mergeability-of-pull-requests/about-protected-branches#require-status-checks-before-merging).
+
+## Outputs
+
+`comment-content` is generated with the same content as would be present in a Dependency Review Action comment.
 
 ## Getting help
 

__tests__/config.test.ts

@@ -26,6 +26,11 @@ test('it reads custom configs', async () => {
   expect(config.allow_licenses).toEqual(['BSD', 'GPL 2'])
 })
 
+test('it defaults to false for warn-only', async () => {
+  const config = await readConfig()
+  expect(config.warn_only).toEqual(false)
+})
+
 test('it defaults to empty allow/deny lists ', async () => {
   const config = await readConfig()
 

__tests__/summary.test.ts

@@ -28,7 +28,8 @@ const defaultConfig: ConfigurationOptions = {
   deny_groups: [],
   comment_summary_in_pr: true,
   retry_on_snapshot_warnings: false,
-  retry_on_snapshot_warnings_timeout: 120
+  retry_on_snapshot_warnings_timeout: 120,
+  warn_only: false
 }
 
 const changesWithEmptyManifests: Changes = [

__tests__/test-helpers.ts

@@ -18,7 +18,8 @@ export function clearInputs(): void {
     'CONFIG-FILE',
     'BASE-REF',
     'HEAD-REF',
-    'COMMENT-SUMMARY-IN-PR'
+    'COMMENT-SUMMARY-IN-PR',
+    'WARN-ONLY'
   ]
 
   // eslint-disable-next-line github/array-foreach

action.yml

@@ -61,6 +61,14 @@ inputs:
     description: Number of seconds to wait before stopping snapshot retries.
     required: false
     default: 120
+  warn-only:
+    description: When set to `true` this action will always complete with success, overriding the `fail-on-severity` parameter.
+    required: false
+    default: false
+outputs:
+  comment-content:
+    description: Prepared dependency report comment
+
 runs:
   using: 'node20'
   main: 'dist/index.js'

docs/examples.md

@@ -1,4 +1,4 @@
-# Examples on how to use the Dependancy Review Action
+# Examples on how to use the Dependency Review Action
 
 ## Basic Usage
 
@@ -20,7 +20,7 @@ jobs:
       - name: 'Checkout Repository'
         uses: actions/checkout@v4
       - name: 'Dependency Review'
-        uses: actions/dependency-review-action@v3
+        uses: actions/dependency-review-action@v4
 ```
 
 ## Using an inline configuration
@@ -41,7 +41,7 @@ jobs:
       - name: 'Checkout Repository'
         uses: actions/checkout@v4
       - name: 'Dependency Review'
-        uses: actions/dependency-review-action@v3
+        uses: actions/dependency-review-action@v4
         with:
           fail-on-severity: critical
           deny-licenses: LGPL-2.0, BSD-2-Clause
@@ -62,7 +62,7 @@ allow_licenses:
   - 'BSD-2-Clause'
 ```
 
-The Dependancy Review Action workflow file will then look like this:
+The Dependency Review Action workflow file will then look like this:
 
 ```yaml
 name: 'Dependency Review'
@@ -78,7 +78,7 @@ jobs:
       - name: 'Checkout Repository'
         uses: actions/checkout@v4
       - name: 'Dependency Review'
-        uses: actions/dependency-review-action@v3
+        uses: actions/dependency-review-action@v4
         with:
           config-file: './.github/dependency-review-config.yml'
 ```
@@ -105,7 +105,7 @@ jobs:
       - name: 'Checkout Repository'
         uses: actions/checkout@v4
       - name: 'Dependency Review'
-        uses: actions/dependency-review-action@v3
+        uses: actions/dependency-review-action@v4
         with:
           config-file: 'github/octorepo/dependency-review-config.yml@main'
 ```
@@ -132,7 +132,7 @@ jobs:
       - name: 'Checkout Repository'
         uses: actions/checkout@v4
       - name: 'Dependency Review'
-        uses: actions/dependency-review-action@v3
+        uses: actions/dependency-review-action@v4
         with:
           config-file: 'github/octorepo-private/dependency-review-config.yml@main'
           external-repo-token: ${{ secrets.GITHUB_TOKEN }} # or a personal access token
@@ -157,13 +157,47 @@ jobs:
       - name: 'Checkout Repository'
         uses: actions/checkout@v4
       - name: 'Dependency Review'
-        uses: actions/dependency-review-action@v3
+        uses: actions/dependency-review-action@v4
         with:
           fail-on-severity: critical
           deny-licenses: LGPL-2.0, BSD-2-Clause
           comment-summary-in-pr: always
 ```
 
+## Getting the results of the action in a later step
+
+Using the `comment-content` output you can get the results of the action in a workflow step.
+
+```yaml
+name: 'Dependency Review'
+on: [pull_request]
+
+permissions:
+  contents: read
+  pull-requests: write
+
+jobs:
+  dependency-review:
+    runs-on: ubuntu-latest
+    steps:
+      - name: 'Checkout Repository'
+        uses: actions/checkout@v4
+      - name: 'Dependency Review'
+        id: review
+        uses: actions/dependency-review-action@v4
+        with:
+          fail-on-severity: critical
+          deny-licenses: LGPL-2.0, BSD-2-Clause
+      - name: 'Report'
+        # make sure this step runs even if the previous failed
+        if: ${{ failure() && steps.review.conclusion == 'failure' }}
+        shell: bash
+        env:
+          comment: ${{ steps.review.outputs.comment-content }}
+        run: |
+          echo "$comment"  # do something with the comment
+```
+
 ## Exclude dependencies from the license check
 
 Using the `allow-dependencies-licenses` you can exclude dependencies from the license check. The values should be provided in [purl](https://github.com/package-url/purl-spec) format.
@@ -185,7 +219,7 @@ jobs:
       - name: 'Checkout Repository'
         uses: actions/checkout@v4
       - name: 'Dependency Review'
-        uses: actions/dependency-review-action@v3
+        uses: actions/dependency-review-action@v4
         with:
           fail-on-severity: critical
           deny-licenses: LGPL-2.0, BSD-2-Clause
@@ -224,7 +258,7 @@ jobs:
       - name: 'Checkout Repository'
         uses: actions/checkout@v4
       - name: 'Dependency Review'
-        uses: actions/dependency-review-action@v3
+        uses: actions/dependency-review-action@v4
         with:
           fail-on-severity: critical
           comment-summary-in-pr: always
@@ -253,7 +287,7 @@ jobs:
       - name: 'Checkout Repository'
         uses: actions/checkout@v4
       - name: 'Dependency Review'
-        uses: actions/dependency-review-action@v3
+        uses: actions/dependency-review-action@v4
         with:
           deny-packages: 'pkg:maven/org.apache.logging.log4j/log4j-api,pkg:maven/org.apache.logging.log4j/log4j-core'
           deny-groups: 'pkg:maven/com.bazaarvoice.jolt'
@@ -287,7 +321,7 @@ jobs:
       - name: 'Checkout Repository'
         uses: actions/checkout@v4
       - name: 'Dependency Review'
-        uses: actions/dependency-review-action@v3
+        uses: actions/dependency-review-action@v4
         with:
           retry-on-snapshot-warnings: true
           retry-on-snapshot-warnings-timeout: 60

package-lock.json

@@ -1,45 +1,45 @@
 {
   "name": "dependency-review-action",
-  "version": "4.0.0",
+  "version": "4.1.3",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "dependency-review-action",
-      "version": "4.0.0",
+      "version": "4.1.3",
       "license": "MIT",
       "dependencies": {
         "@actions/core": "^1.10.1",
         "@actions/github": "^6.0.0",
         "@octokit/plugin-retry": "^6.0.1",
         "@octokit/request-error": "^5.0.1",
-        "@types/jest": "^29.5.11",
+        "@types/jest": "^29.5.12",
         "ansi-styles": "^6.2.1",
-        "got": "^14.0.0",
+        "got": "^14.2.0",
         "jest": "^29.7.0",
         "octokit": "^3.1.2",
         "packageurl-js": "^1.2.0",
         "spdx-expression-parse": "^3.0.1",
         "spdx-satisfies": "^5.0.1",
-        "ts-jest": "^29.1.1",
+        "ts-jest": "^29.1.2",
         "yaml": "^2.3.4",
         "zod": "^3.22.3"
       },
       "devDependencies": {
-        "@types/node": "^16.18.70",
+        "@types/node": "^20",
         "@types/spdx-expression-parse": "^3.0.4",
         "@types/spdx-satisfies": "^0.1.1",
-        "@typescript-eslint/eslint-plugin": "^6.18.1",
-        "@typescript-eslint/parser": "^6.18.1",
+        "@typescript-eslint/eslint-plugin": "^6.21.0",
+        "@typescript-eslint/parser": "^6.21.0",
         "@vercel/ncc": "^0.38.0",
         "esbuild-register": "^3.5.0",
         "eslint": "^8.56.0",
         "eslint-plugin-github": "^4.10.1",
-        "eslint-plugin-jest": "^27.6.0",
-        "eslint-plugin-prettier": "^5.1.2",
+        "eslint-plugin-jest": "^27.6.3",
+        "eslint-plugin-prettier": "^5.1.3",
         "js-yaml": "^4.1.0",
-        "nodemon": "^3.0.2",
-        "prettier": "3.1.1",
+        "nodemon": "^3.0.3",
+        "prettier": "3.2.5",
         "typescript": "^5.3.3"
       }
     },
@@ -2060,9 +2060,9 @@
       }
     },
     "node_modules/@types/jest": {
-      "version": "29.5.11",
-      "resolved": "https://registry.npmjs.org/@types/jest/-/jest-29.5.11.tgz",
-      "integrity": "sha512-S2mHmYIVe13vrm6q4kN6fLYYAka15ALQki/vgDC3mIukEOx8WJlv0kQPM+d4w8Gp6u0uSdKND04IlTXBv0rwnQ==",
+      "version": "29.5.12",
+      "resolved": "https://registry.npmjs.org/@types/jest/-/jest-29.5.12.tgz",
+      "integrity": "sha512-eDC8bTvT/QhYdxJAulQikueigY5AsdBRH2yDKW3yveW7svY3+DzN84/2NUgkw10RTiJbWqZrTtoGVdYlvFJdLw==",
       "dependencies": {
         "expect": "^29.0.0",
         "pretty-format": "^29.0.0"
@@ -2089,9 +2089,12 @@
       }
     },
     "node_modules/@types/node": {
-      "version": "16.18.70",
-      "resolved": "https://registry.npmjs.org/@types/node/-/node-16.18.70.tgz",
-      "integrity": "sha512-8eIk20G5VVVQNZNouHjLA2b8utE2NvGybLjMaF4lyhA9uhGwnmXF8o+icdXKGSQSNANJewXva/sFUoZLwAaYAg=="
+      "version": "20.11.19",
+      "resolved": "https://registry.npmjs.org/@types/node/-/node-20.11.19.tgz",
+      "integrity": "sha512-7xMnVEcZFu0DikYjWOlRq7NTPETrm7teqUT2WkQjrTIkEgUyyGdWsj/Zg8bEJt5TNklzbPD1X3fqfsHw3SpapQ==",
+      "dependencies": {
+        "undici-types": "~5.26.4"
+      }
     },
     "node_modules/@types/semver": {
       "version": "7.5.5",
@@ -2130,16 +2133,16 @@
       "integrity": "sha512-I4q9QU9MQv4oEOz4tAHJtNz1cwuLxn2F3xcc2iV5WdqLPpUnj30aUuxt1mAxYTG+oe8CZMV/+6rU4S4gRDzqtQ=="
     },
     "node_modules/@typescript-eslint/eslint-plugin": {
-      "version": "6.18.1",
-      "resolved": "https://registry.npmjs.org/@typescript-eslint/eslint-plugin/-/eslint-plugin-6.18.1.tgz",
-      "integrity": "sha512-nISDRYnnIpk7VCFrGcu1rnZfM1Dh9LRHnfgdkjcbi/l7g16VYRri3TjXi9Ir4lOZSw5N/gnV/3H7jIPQ8Q4daA==",
+      "version": "6.21.0",
+      "resolved": "https://registry.npmjs.org/@typescript-eslint/eslint-plugin/-/eslint-plugin-6.21.0.tgz",
+      "integrity": "sha512-oy9+hTPCUFpngkEZUSzbf9MxI65wbKFoQYsgPdILTfbUldp5ovUuphZVe4i30emU9M/kP+T64Di0mxl7dSw3MA==",
       "dev": true,
       "dependencies": {
         "@eslint-community/regexpp": "^4.5.1",
-        "@typescript-eslint/scope-manager": "6.18.1",
-        "@typescript-eslint/type-utils": "6.18.1",
-        "@typescript-eslint/utils": "6.18.1",
-        "@typescript-eslint/visitor-keys": "6.18.1",
+        "@typescript-eslint/scope-manager": "6.21.0",
+        "@typescript-eslint/type-utils": "6.21.0",
+        "@typescript-eslint/utils": "6.21.0",
+        "@typescript-eslint/visitor-keys": "6.21.0",
         "debug": "^4.3.4",
         "graphemer": "^1.4.0",
         "ignore": "^5.2.4",
@@ -2165,15 +2168,15 @@
       }
     },
     "node_modules/@typescript-eslint/parser": {
-      "version": "6.18.1",
-      "resolved": "https://registry.npmjs.org/@typescript-eslint/parser/-/parser-6.18.1.tgz",
-      "integrity": "sha512-zct/MdJnVaRRNy9e84XnVtRv9Vf91/qqe+hZJtKanjojud4wAVy/7lXxJmMyX6X6J+xc6c//YEWvpeif8cAhWA==",
+      "version": "6.21.0",
+      "resolved": "https://registry.npmjs.org/@typescript-eslint/parser/-/parser-6.21.0.tgz",
+      "integrity": "sha512-tbsV1jPne5CkFQCgPBcDOt30ItF7aJoZL997JSF7MhGQqOeT3svWRYxiqlfA5RUdlHN6Fi+EI9bxqbdyAUZjYQ==",
       "dev": true,
       "dependencies": {
-        "@typescript-eslint/scope-manager": "6.18.1",
-        "@typescript-eslint/types": "6.18.1",
-        "@typescript-eslint/typescript-estree": "6.18.1",
-        "@typescript-eslint/visitor-keys": "6.18.1",
+        "@typescript-eslint/scope-manager": "6.21.0",
+        "@typescript-eslint/types": "6.21.0",
+        "@typescript-eslint/typescript-estree": "6.21.0",
+        "@typescript-eslint/visitor-keys": "6.21.0",
         "debug": "^4.3.4"
       },
       "engines": {
@@ -2193,13 +2196,13 @@
       }
     },
     "node_modules/@typescript-eslint/scope-manager": {
-      "version": "6.18.1",
-      "resolved": "https://registry.npmjs.org/@typescript-eslint/scope-manager/-/scope-manager-6.18.1.tgz",
-      "integrity": "sha512-BgdBwXPFmZzaZUuw6wKiHKIovms97a7eTImjkXCZE04TGHysG+0hDQPmygyvgtkoB/aOQwSM/nWv3LzrOIQOBw==",
+      "version": "6.21.0",
+      "resolved": "https://registry.npmjs.org/@typescript-eslint/scope-manager/-/scope-manager-6.21.0.tgz",
+      "integrity": "sha512-OwLUIWZJry80O99zvqXVEioyniJMa+d2GrqpUTqi5/v5D5rOrppJVBPa0yKCblcigC0/aYAzxxqQ1B+DS2RYsg==",
       "dev": true,
       "dependencies": {
-        "@typescript-eslint/types": "6.18.1",
-        "@typescript-eslint/visitor-keys": "6.18.1"
+        "@typescript-eslint/types": "6.21.0",
+        "@typescript-eslint/visitor-keys": "6.21.0"
       },
       "engines": {
         "node": "^16.0.0 || >=18.0.0"
@@ -2210,13 +2213,13 @@
       }
     },
     "node_modules/@typescript-eslint/type-utils": {
-      "version": "6.18.1",
-      "resolved": "https://registry.npmjs.org/@typescript-eslint/type-utils/-/type-utils-6.18.1.tgz",
-      "integrity": "sha512-wyOSKhuzHeU/5pcRDP2G2Ndci+4g653V43gXTpt4nbyoIOAASkGDA9JIAgbQCdCkcr1MvpSYWzxTz0olCn8+/Q==",
+      "version": "6.21.0",
+      "resolved": "https://registry.npmjs.org/@typescript-eslint/type-utils/-/type-utils-6.21.0.tgz",
+      "integrity": "sha512-rZQI7wHfao8qMX3Rd3xqeYSMCL3SoiSQLBATSiVKARdFGCYSRvmViieZjqc58jKgs8Y8i9YvVVhRbHSTA4VBag==",
       "dev": true,
       "dependencies": {
-        "@typescript-eslint/typescript-estree": "6.18.1",
-        "@typescript-eslint/utils": "6.18.1",
+        "@typescript-eslint/typescript-estree": "6.21.0",
+        "@typescript-eslint/utils": "6.21.0",
         "debug": "^4.3.4",
         "ts-api-utils": "^1.0.1"
       },
@@ -2237,9 +2240,9 @@
       }
     },
     "node_modules/@typescript-eslint/types": {
-      "version": "6.18.1",
-      "resolved": "https://registry.npmjs.org/@typescript-eslint/types/-/types-6.18.1.tgz",
-      "integrity": "sha512-4TuMAe+tc5oA7wwfqMtB0Y5OrREPF1GeJBAjqwgZh1lEMH5PJQgWgHGfYufVB51LtjD+peZylmeyxUXPfENLCw==",
+      "version": "6.21.0",
+      "resolved": "https://registry.npmjs.org/@typescript-eslint/types/-/types-6.21.0.tgz",
+      "integrity": "sha512-1kFmZ1rOm5epu9NZEZm1kckCDGj5UJEf7P1kliH4LKu/RkwpsfqqGmY2OOcUs18lSlQBKLDYBOGxRVtrMN5lpg==",
       "dev": true,
       "engines": {
         "node": "^16.0.0 || >=18.0.0"
@@ -2250,13 +2253,13 @@
       }
     },
     "node_modules/@typescript-eslint/typescript-estree": {
-      "version": "6.18.1",
-      "resolved": "https://registry.npmjs.org/@typescript-eslint/typescript-estree/-/typescript-estree-6.18.1.tgz",
-      "integrity": "sha512-fv9B94UAhywPRhUeeV/v+3SBDvcPiLxRZJw/xZeeGgRLQZ6rLMG+8krrJUyIf6s1ecWTzlsbp0rlw7n9sjufHA==",
+      "version": "6.21.0",
+      "resolved": "https://registry.npmjs.org/@typescript-eslint/typescript-estree/-/typescript-estree-6.21.0.tgz",
+      "integrity": "sha512-6npJTkZcO+y2/kr+z0hc4HwNfrrP4kNYh57ek7yCNlrBjWQ1Y0OS7jiZTkgumrvkX5HkEKXFZkkdFNkaW2wmUQ==",
       "dev": true,
       "dependencies": {
-        "@typescript-eslint/types": "6.18.1",
-        "@typescript-eslint/visitor-keys": "6.18.1",
+        "@typescript-eslint/types": "6.21.0",
+        "@typescript-eslint/visitor-keys": "6.21.0",
         "debug": "^4.3.4",
         "globby": "^11.1.0",
         "is-glob": "^4.0.3",
@@ -2302,17 +2305,17 @@
       }
     },
     "node_modules/@typescript-eslint/utils": {
-      "version": "6.18.1",
-      "resolved": "https://registry.npmjs.org/@typescript-eslint/utils/-/utils-6.18.1.tgz",
-      "integrity": "sha512-zZmTuVZvD1wpoceHvoQpOiewmWu3uP9FuTWo8vqpy2ffsmfCE8mklRPi+vmnIYAIk9t/4kOThri2QCDgor+OpQ==",
+      "version": "6.21.0",
+      "resolved": "https://registry.npmjs.org/@typescript-eslint/utils/-/utils-6.21.0.tgz",
+      "integrity": "sha512-NfWVaC8HP9T8cbKQxHcsJBY5YE1O33+jpMwN45qzWWaPDZgLIbo12toGMWnmhvCpd3sIxkpDw3Wv1B3dYrbDQQ==",
       "dev": true,
       "dependencies": {
         "@eslint-community/eslint-utils": "^4.4.0",
         "@types/json-schema": "^7.0.12",
         "@types/semver": "^7.5.0",
-        "@typescript-eslint/scope-manager": "6.18.1",
-        "@typescript-eslint/types": "6.18.1",
-        "@typescript-eslint/typescript-estree": "6.18.1",
+        "@typescript-eslint/scope-manager": "6.21.0",
+        "@typescript-eslint/types": "6.21.0",
+        "@typescript-eslint/typescript-estree": "6.21.0",
         "semver": "^7.5.4"
       },
       "engines": {
@@ -2327,12 +2330,12 @@
       }
     },
     "node_modules/@typescript-eslint/visitor-keys": {
-      "version": "6.18.1",
-      "resolved": "https://registry.npmjs.org/@typescript-eslint/visitor-keys/-/visitor-keys-6.18.1.tgz",
-      "integrity": "sha512-/kvt0C5lRqGoCfsbmm7/CwMqoSkY3zzHLIjdhHZQW3VFrnz7ATecOHR7nb7V+xn4286MBxfnQfQhAmCI0u+bJA==",
+      "version": "6.21.0",
+      "resolved": "https://registry.npmjs.org/@typescript-eslint/visitor-keys/-/visitor-keys-6.21.0.tgz",
+      "integrity": "sha512-JJtkDduxLi9bivAB+cYOVMtbkqdPOhZ+ZI5LC47MIRrDV4Yn2o+ZnW10Nkmr28xRpSpdJ6Sm42Hjf2+REYXm0A==",
       "dev": true,
       "dependencies": {
-        "@typescript-eslint/types": "6.18.1",
+        "@typescript-eslint/types": "6.21.0",
         "eslint-visitor-keys": "^3.4.1"
       },
       "engines": {
@@ -3808,9 +3811,9 @@
       }
     },
     "node_modules/eslint-plugin-jest": {
-      "version": "27.6.0",
-      "resolved": "https://registry.npmjs.org/eslint-plugin-jest/-/eslint-plugin-jest-27.6.0.tgz",
-      "integrity": "sha512-MTlusnnDMChbElsszJvrwD1dN3x6nZl//s4JD23BxB6MgR66TZlL064su24xEIS3VACfAoHV1vgyMgPw8nkdng==",
+      "version": "27.6.3",
+      "resolved": "https://registry.npmjs.org/eslint-plugin-jest/-/eslint-plugin-jest-27.6.3.tgz",
+      "integrity": "sha512-+YsJFVH6R+tOiO3gCJon5oqn4KWc+mDq2leudk8mrp8RFubLOo9CVyi3cib4L7XMpxExmkmBZQTPDYVBzgpgOA==",
       "dev": true,
       "dependencies": {
         "@typescript-eslint/utils": "^5.10.0"
@@ -3994,9 +3997,9 @@
       }
     },
     "node_modules/eslint-plugin-prettier": {
-      "version": "5.1.2",
-      "resolved": "https://registry.npmjs.org/eslint-plugin-prettier/-/eslint-plugin-prettier-5.1.2.tgz",
-      "integrity": "sha512-dhlpWc9vOwohcWmClFcA+HjlvUpuyynYs0Rf+L/P6/0iQE6vlHW9l5bkfzN62/Stm9fbq8ku46qzde76T1xlSg==",
+      "version": "5.1.3",
+      "resolved": "https://registry.npmjs.org/eslint-plugin-prettier/-/eslint-plugin-prettier-5.1.3.tgz",
+      "integrity": "sha512-C9GCVAs4Eq7ZC/XFQHITLiHJxQngdtraXaM+LoUFoFp/lHNl2Zn8f3WQbe9HvTBBQ9YnKFB0/2Ajdqwo5D1EAw==",
       "dev": true,
       "dependencies": {
         "prettier-linter-helpers": "^1.0.0",
@@ -4533,9 +4536,9 @@
       }
     },
     "node_modules/got": {
-      "version": "14.0.0",
-      "resolved": "https://registry.npmjs.org/got/-/got-14.0.0.tgz",
-      "integrity": "sha512-X01vTgaX9SwaMq5DfImvS+3GMQFFs5HtrrlS9CuzUSzkxAf/tWGEyynuI+Qy7BjciMczZGjyVSmawYbP4eYhYA==",
+      "version": "14.2.0",
+      "resolved": "https://registry.npmjs.org/got/-/got-14.2.0.tgz",
+      "integrity": "sha512-dBq2KkHcQl3AwPoIWsLsQScCPpUgRulz1qZVthjPYKYOPmYfBnekR3vxecjZbm91Vc3JUGnV9mqFX7B+Fe2quw==",
       "dependencies": {
         "@sindresorhus/is": "^6.1.0",
         "@szmarczak/http-timer": "^5.0.1",
@@ -6141,9 +6144,9 @@
       "integrity": "sha512-uYr7J37ae/ORWdZeQ1xxMJe3NtdmqMC/JZK+geofDrkLUApKRHPd18/TxtBOJ4A0/+uUIliorNrfYV6s1b02eQ=="
     },
     "node_modules/nodemon": {
-      "version": "3.0.2",
-      "resolved": "https://registry.npmjs.org/nodemon/-/nodemon-3.0.2.tgz",
-      "integrity": "sha512-9qIN2LNTrEzpOPBaWHTm4Asy1LxXLSickZStAQ4IZe7zsoIpD/A7LWxhZV3t4Zu352uBcqVnRsDXSMR2Sc3lTA==",
+      "version": "3.0.3",
+      "resolved": "https://registry.npmjs.org/nodemon/-/nodemon-3.0.3.tgz",
+      "integrity": "sha512-7jH/NXbFPxVaMwmBCC2B9F/V6X1VkEdNgx3iu9jji8WxWcvhMWkmhNWhI5077zknOnZnBzba9hZP6bCPJLSReQ==",
       "dev": true,
       "dependencies": {
         "chokidar": "^3.5.2",
@@ -6599,9 +6602,9 @@
       }
     },
     "node_modules/prettier": {
-      "version": "3.1.1",
-      "resolved": "https://registry.npmjs.org/prettier/-/prettier-3.1.1.tgz",
-      "integrity": "sha512-22UbSzg8luF4UuZtzgiUOfcGM8s4tjBv6dJRT7j275NXsy2jb4aJa4NNveul5x4eqlF1wuhuR2RElK71RvmVaw==",
+      "version": "3.2.5",
+      "resolved": "https://registry.npmjs.org/prettier/-/prettier-3.2.5.tgz",
+      "integrity": "sha512-3/GWa9aOC0YeD7LUfvOG2NiDyhOWRvt1k+rcKhOuYnMY24iiCphgneUfJDyFXd6rZCAnuLBv6UeAULtrhT/F4A==",
       "dev": true,
       "bin": {
         "prettier": "bin/prettier.cjs"
@@ -7396,9 +7399,9 @@
       }
     },
     "node_modules/ts-jest": {
-      "version": "29.1.1",
-      "resolved": "https://registry.npmjs.org/ts-jest/-/ts-jest-29.1.1.tgz",
-      "integrity": "sha512-D6xjnnbP17cC85nliwGiL+tpoKN0StpgE0TeOjXQTU6MVCfsB4v7aW05CgQ/1OywGb0x/oy9hHFnN+sczTiRaA==",
+      "version": "29.1.2",
+      "resolved": "https://registry.npmjs.org/ts-jest/-/ts-jest-29.1.2.tgz",
+      "integrity": "sha512-br6GJoH/WUX4pu7FbZXuWGKGNDuU7b8Uj77g/Sp7puZV6EXzuByl6JrECvm0MzVzSTkSHWTihsXt+5XYER5b+g==",
       "dependencies": {
         "bs-logger": "0.x",
         "fast-json-stable-stringify": "2.x",
@@ -7413,7 +7416,7 @@
         "ts-jest": "cli.js"
       },
       "engines": {
-        "node": "^14.15.0 || ^16.10.0 || >=18.0.0"
+        "node": "^16.10.0 || ^18.0.0 || >=20.0.0"
       },
       "peerDependencies": {
         "@babel/core": ">=7.0.0-beta.0 <8",
@@ -7636,9 +7639,9 @@
       "dev": true
     },
     "node_modules/undici": {
-      "version": "5.27.2",
-      "resolved": "https://registry.npmjs.org/undici/-/undici-5.27.2.tgz",
-      "integrity": "sha512-iS857PdOEy/y3wlM3yRp+6SNQQ6xU0mmZcwRSriqk+et/cwWAtwmIGf6WkoDN2EK/AMdCO/dfXzIwi+rFMrjjQ==",
+      "version": "5.28.3",
+      "resolved": "https://registry.npmjs.org/undici/-/undici-5.28.3.tgz",
+      "integrity": "sha512-3ItfzbrhDlINjaP0duwnNsKpDQk3acHI3gVJ1z4fmwMK31k5G9OVIAMLSIaP6w4FaGkaAkN6zaQO9LUvZ1t7VA==",
       "dependencies": {
         "@fastify/busboy": "^2.0.0"
       },
@@ -7646,6 +7649,11 @@
         "node": ">=14.0"
       }
     },
+    "node_modules/undici-types": {
+      "version": "5.26.5",
+      "resolved": "https://registry.npmjs.org/undici-types/-/undici-types-5.26.5.tgz",
+      "integrity": "sha512-JlCMO+ehdEIKqlFxk6IfVoAUVmgz7cU7zD/h9XZ0qzeosSHmUJVOzSQvvYSYWXkFXC+IfLKSIffhv0sVZup6pA=="
+    },
     "node_modules/universal-github-app-jwt": {
       "version": "1.1.2",
       "resolved": "https://registry.npmjs.org/universal-github-app-jwt/-/universal-github-app-jwt-1.1.2.tgz",

package.json

@@ -1,6 +1,6 @@
 {
   "name": "dependency-review-action",
-  "version": "4.0.0",
+  "version": "4.1.3",
   "private": true,
   "description": "A GitHub Action for Dependency Review",
   "main": "lib/main.js",
@@ -29,33 +29,33 @@
     "@actions/github": "^6.0.0",
     "@octokit/plugin-retry": "^6.0.1",
     "@octokit/request-error": "^5.0.1",
-    "@types/jest": "^29.5.11",
+    "@types/jest": "^29.5.12",
     "ansi-styles": "^6.2.1",
-    "got": "^14.0.0",
+    "got": "^14.2.0",
     "jest": "^29.7.0",
     "octokit": "^3.1.2",
     "packageurl-js": "^1.2.0",
     "spdx-expression-parse": "^3.0.1",
     "spdx-satisfies": "^5.0.1",
-    "ts-jest": "^29.1.1",
+    "ts-jest": "^29.1.2",
     "yaml": "^2.3.4",
     "zod": "^3.22.3"
   },
   "devDependencies": {
-    "@types/node": "^16.18.70",
+    "@types/node": "^20",
     "@types/spdx-expression-parse": "^3.0.4",
     "@types/spdx-satisfies": "^0.1.1",
-    "@typescript-eslint/eslint-plugin": "^6.18.1",
-    "@typescript-eslint/parser": "^6.18.1",
+    "@typescript-eslint/eslint-plugin": "^6.21.0",
+    "@typescript-eslint/parser": "^6.21.0",
     "@vercel/ncc": "^0.38.0",
     "esbuild-register": "^3.5.0",
     "eslint": "^8.56.0",
     "eslint-plugin-github": "^4.10.1",
-    "eslint-plugin-jest": "^27.6.0",
-    "eslint-plugin-prettier": "^5.1.2",
+    "eslint-plugin-jest": "^27.6.3",
+    "eslint-plugin-prettier": "^5.1.3",
     "js-yaml": "^4.1.0",
-    "nodemon": "^3.0.2",
-    "prettier": "3.1.1",
+    "nodemon": "^3.0.3",
+    "prettier": "3.2.5",
     "typescript": "^5.3.3"
   }
 }

scripts/create_summary.ts

@@ -32,7 +32,8 @@ const defaultConfig: ConfigurationOptions = {
   ],
   comment_summary_in_pr: true,
   retry_on_snapshot_warnings: false,
-  retry_on_snapshot_warnings_timeout: 120
+  retry_on_snapshot_warnings_timeout: 120,
+  warn_only: false
 }
 
 const tmpDir = path.resolve(__dirname, '../tmp')

src/comment-pr.ts

@@ -13,6 +13,10 @@ const octo = new retryingOctokit(
 const COMMENT_MARKER = '<!-- dependency-review-pr-comment-marker -->'
 
 export async function commentPr(summary: typeof core.summary): Promise<void> {
+  const commentContent = summary.stringify()
+
+  core.setOutput('comment-content', commentContent)
+
   if (!github.context.payload.pull_request) {
     core.warning(
       'Not in the context of a pull request. Skipping comment creation.'
@@ -20,7 +24,7 @@ export async function commentPr(summary: typeof core.summary): Promise<void> {
     return
   }
 
-  const commentBody = `${summary.stringify()}\n\n${COMMENT_MARKER}`
+  const commentBody = `${commentContent}\n\n${COMMENT_MARKER}`
 
   try {
     const existingCommentId = await findCommentByMarker(COMMENT_MARKER)
@@ -74,8 +78,8 @@ async function findCommentByMarker(
   )
 
   for await (const {data: comments} of commentsIterator) {
-    const existingComment = comments.find(
-      comment => comment.body?.includes(commentBodyIncludes)
+    const existingComment = comments.find(comment =>
+      comment.body?.includes(commentBodyIncludes)
     )
     if (existingComment) return existingComment.id
   }

src/config.ts

@@ -47,6 +47,7 @@ function readInlineConfig(): ConfigurationOptionsPartial {
   const retry_on_snapshot_warnings_timeout = getOptionalNumber(
     'retry-on-snapshot-warnings-timeout'
   )
+  const warn_only = getOptionalBoolean('warn-only')
 
   validatePURL(allow_dependencies_licenses)
   validateLicenses('allow-licenses', allow_licenses)
@@ -67,7 +68,8 @@ function readInlineConfig(): ConfigurationOptionsPartial {
     head_ref,
     comment_summary_in_pr,
     retry_on_snapshot_warnings,
-    retry_on_snapshot_warnings_timeout
+    retry_on_snapshot_warnings_timeout,
+    warn_only
   }
 
   return Object.fromEntries(

src/git-refs.ts

@@ -21,16 +21,19 @@ export function getRefs(
   if (!base_ref && !head_ref) {
     throw new Error(
       'Both a base ref and head ref must be provided, either via the `base_ref`/`head_ref` ' +
-        'config options, or by running a `pull_request`/`pull_request_target` workflow.'
+        'config options, `base-ref`/`head-ref` workflow action options, or by running a ' +
+        '`pull_request`/`pull_request_target` workflow.'
     )
   } else if (!base_ref) {
     throw new Error(
       'A base ref must be provided, either via the `base_ref` config option, ' +
-        'or by running a `pull_request`/`pull_request_target` workflow.'
+        '`base-ref` workflow action option, or by running a ' +
+        '`pull_request`/`pull_request_target` workflow.'
     )
   } else if (!head_ref) {
     throw new Error(
       'A head ref must be provided, either via the `head_ref` config option, ' +
+        '`head-ref` workflow action option, or by running a ' +
         'or by running a `pull_request`/`pull_request_target` workflow.'
     )
   }

src/main.ts

@@ -87,7 +87,14 @@ async function run(): Promise<void> {
       scopedChanges
     )
 
-    const minSeverity = config.fail_on_severity
+    const failOnSeverityParams = config.fail_on_severity
+    const warnOnly = config.warn_only
+    let minSeverity: Severity = 'low'
+    // If failOnSeverityParams is not set or warnOnly is true, the minSeverity is low, to allow all vulnerabilities to be reported as warnings
+    if (failOnSeverityParams && !warnOnly) {
+      minSeverity = failOnSeverityParams
+    }
+
     const vulnerableChanges = filterChangesBySeverity(
       minSeverity,
       filteredChanges
@@ -124,11 +131,11 @@ async function run(): Promise<void> {
 
     if (config.vulnerability_check) {
       summary.addChangeVulnerabilitiesToSummary(vulnerableChanges, minSeverity)
-      printVulnerabilitiesBlock(vulnerableChanges, minSeverity)
+      printVulnerabilitiesBlock(vulnerableChanges, minSeverity, warnOnly)
     }
     if (config.license_check) {
       summary.addLicensesToSummary(invalidLicenseChanges, config)
-      printLicensesBlock(invalidLicenseChanges)
+      printLicensesBlock(invalidLicenseChanges, warnOnly)
     }
     if (config.deny_packages || config.deny_groups) {
       summary.addDeniedToSummary(deniedChanges)
@@ -167,19 +174,25 @@ async function run(): Promise<void> {
 
 function printVulnerabilitiesBlock(
   addedChanges: Changes,
-  minSeverity: Severity
+  minSeverity: Severity,
+  warnOnly: boolean
 ): void {
-  let failed = false
+  let vulFound = false
   core.group('Vulnerabilities', async () => {
     if (addedChanges.length > 0) {
       for (const change of addedChanges) {
         printChangeVulnerabilities(change)
       }
-      failed = true
+      vulFound = true
     }
 
-    if (failed) {
-      core.setFailed('Dependency review detected vulnerable packages.')
+    if (vulFound) {
+      const msg = 'Dependency review detected vulnerable packages.'
+      if (warnOnly) {
+        core.warning(msg)
+      } else {
+        core.setFailed(msg)
+      }
     } else {
       core.info(
         `Dependency review did not detect any vulnerable packages with severity level "${minSeverity}" or higher.`
@@ -202,13 +215,19 @@ function printChangeVulnerabilities(change: Change): void {
 }
 
 function printLicensesBlock(
-  invalidLicenseChanges: Record<string, Changes>
+  invalidLicenseChanges: Record<string, Changes>,
+  warnOnly: boolean
 ): void {
   core.group('Licenses', async () => {
     if (invalidLicenseChanges.forbidden.length > 0) {
       core.info('\nThe following dependencies have incompatible licenses:')
       printLicensesError(invalidLicenseChanges.forbidden)
-      core.setFailed('Dependency review detected incompatible licenses.')
+      const msg = 'Dependency review detected incompatible licenses.'
+      if (warnOnly) {
+        core.warning(msg)
+      } else {
+        core.setFailed(msg)
+      }
     }
     if (invalidLicenseChanges.unresolved.length > 0) {
       core.warning(

src/schemas.ts

@@ -59,7 +59,8 @@ export const ConfigurationOptionsSchema = z
         ),
         z.enum(['always', 'never', 'on-failure'])
       ])
-      .default('never')
+      .default('never'),
+    warn_only: z.boolean().default(false)
   })
   .transform(config => {
     if (config.comment_summary_in_pr === true) {