Pin GitHub Actions to full-length commit SHAs - #30082
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Dan Fiedler (danfiedler-msft) wants to merge 1 commit into
Open
Dan Fiedler (danfiedler-msft) wants to merge 1 commit into
Dan Fiedler (danfiedler-msft) wants to merge 1 commit into
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Dan Fiedler (danfiedler-msft)
August 28, 2026 23:42
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Pull request overview
This PR hardens the repository’s CI/CD configuration by pinning GitHub Actions workflow uses: references to full-length commit SHAs (improving supply-chain security and reproducibility) and introduces a 7-day Dependabot cooldown for GitHub Actions updates.
Changes:
- Pinned third-party GitHub Actions references in workflows to full-length commit SHAs with version comments.
- Added
.github/dependabot.ymlto enable weekly GitHub Actions updates, grouped together, with a 7-day cooldown window.
Reviewed changes
Copilot reviewed 4 out of 4 changed files in this pull request and generated 1 comment.
| File | Description |
|---|---|
| .github/workflows/pr-labeled.yml | Pins actions/checkout to a full-length SHA (but currently has a YAML indentation issue in steps: that must be fixed). |
| .github/workflows/issue-sentinel.yml | Pins Azure/issue-sentinel action to a full-length SHA with a version comment. |
| .github/workflows/issue-metrics.yml | Pins issue-metrics and create-issue-from-file actions to full-length SHAs with version comments. |
| .github/dependabot.yml | Adds Dependabot config for github-actions with weekly scheduling, grouping, and a 7-day cooldown. |
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| steps: | ||
| - uses: actions/checkout@v4 | ||
| - uses: actions/checkout@11d5960a326750d5838078e36cf38b85af677262 # v4.4.0 | ||
| with: | ||
| sparse-checkout: | | ||
| .github |
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🤖 PR Validation — ❌ Action needed
️✔️Az.Accounts
️✔️Az.Compute
️✔️Az.EventHub
️✔️Az.KeyVault
️✔️Az.ManagedServiceIdentity
️✔️Az.Monitor
️✔️Az.Network
️✔️Az.OperationalInsights
️✔️Az.PrivateDns
❌Az.Sql
️✔️Az.Storage
Summary
This PR pins GitHub Actions to full-length commit SHAs for improved security and reproducibility and adds a 7 day cooldown to Dependabot configuration for GitHub Actions. This work is described in more detail at https://aka.ms/action-pinning.
Why?
Pinning actions to commit SHAs prevents supply-chain attacks where a tag could be moved to point to malicious code. This is a recommended security best practice per the GitHub Actions security hardening guide.
This change mitigates the risk of tag retargeting to malicious code as seen in incidents like the tj-actions/changed-files action compromise or codfish/semantic-release-action compromise and improves the integrity and reproducibility of the CI/CD pipeline.
What changed?
Action pinning: Third-party action references in
.github/workflows/that used mutable tag-based references (e.g.,actions/checkout@v4) have been updated to full-length commit SHAs with a version comment (e.g.,actions/checkout@<sha> # v4) using the pinact tool. References that were already pinned to a SHA, or that used immutable release tags, were left unchanged.Dependabot configuration:
.github/dependabot.ymlhas been updated to ensure agithub-actionspackage-ecosystem section is present with acooldownconfiguration (default-days: 7). If the file did not exist, it was created. If agithub-actionssection already existed, only thecooldownblock was added or itsdefault-daysvalue was increased to 7 if it was lower. The 7-day cooldown provides a window for the community to detect and report compromised releases before they are automatically proposed as updates, reducing exposure to supply-chain attacks via newly published malicious versions.Is this safe to merge?
Yes. The pinned SHAs correspond to the same commits that the existing tags pointed to. No behavioral changes in action execution are introduced. You can verify the pinned SHA value using the GitHub REST API (e.g., the commit hash for
actions/checkout@v7can be found in theshaproperty in the JSON response forGET https://api.github.com/repos/actions/checkout/commits/v7).Additional Information
For more information, please see https://aka.ms/action-pinning