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Pin GitHub Actions to full-length commit SHAs - #1910

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Stella Huang (StellaHuang95) merged 6 commits into
microsoft:mainfrom
danfiedler-msft:danfiedler/pin-actions
Oct 27, 2026
Merged

Stella Huang (StellaHuang95) merged 6 commits into
microsoft:mainfrom
danfiedler-msft:danfiedler/pin-actions

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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.yml has been updated to ensure a github-actions package-ecosystem section is present with a cooldown configuration (default-days: 7). If the file did not exist, it was created. If a github-actions section already existed, only the cooldown block was added or its default-days value 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@v7 can be found in the sha property in the JSON response for GET https://api.github.com/repos/actions/checkout/commits/v7).

Additional Information

For more information, please see https://aka.ms/action-pinning

@eleanorjboyd Eleanor Boyd (eleanorjboyd) added the debt Code quality issues label Oct 9, 2026
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Heejae Chang (heejaechang) commented Oct 13, 2026 •

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🔒 Automated review in progress — Heejae Chang (@heejaechang) is auto-reviewing this PR.

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Result: 🔴 could-not-verify

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Verification: The relevant tests could not be fully run in the isolated environment; this review is not fully verified.

Details: Verification could not complete:

Test runs: none recorded.

@heejaechang Heejae Chang (heejaechang) added the review-auto:changes-requested Automated review: posted blocking findings to address. label Oct 14, 2026
Comment thread .github/workflows/pr-check.yml
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Result: 🔴 could-not-verify

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Verification: The relevant tests could not be fully run in the isolated environment; this review is not fully verified.

Summary: [unavailable] Container verification could not start and local execution was not authorized for this PR HEAD: Could not prepare offline npm dependencies: Could not download lodash.once@4.1.1 from the Microsoft package feed (ReadTimeout).

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Result: 🔴 could-not-verify

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Verification: The relevant tests could not be fully run in the isolated environment; this review is not fully verified.

Details: Verification could not complete: timeout must be None or at least 2073600 seconds (24 days); shorter completion deadlines are unsupported.

Test runs: none recorded.

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Result: 🔴 could-not-verify

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Verification: The relevant tests could not be fully run in the isolated environment; this review is not fully verified.

Details: Verification could not complete: timeout must be None or at least 2073600 seconds (24 days); shorter completion deadlines are unsupported.

Test runs: none recorded.

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Result: 🔴 could-not-verify

Verification details

Verification: The relevant tests could not be fully run in the isolated environment; this review is not fully verified.

Details: Verification could not complete: timeout must be None or at least 2073600 seconds (24 days); shorter completion deadlines are unsupported.

Test runs: none recorded.

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Result: 🔴 could-not-verify

Verification details

Verification: The relevant tests could not be fully run in the isolated environment; this review is not fully verified.

Details: Verification could not complete: timeout must be None or at least 2073600 seconds (24 days); shorter completion deadlines are unsupported.

Test runs: none recorded.

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Result: 🔴 could-not-verify

Verification details

Verification: The relevant tests could not be fully run in the isolated environment; this review is not fully verified.

Details: Verification could not complete: timeout must be None or at least 2073600 seconds (24 days); shorter completion deadlines are unsupported.

Test runs: none recorded.

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Result: 🔴 could-not-verify

Verification details

Verification: The relevant tests could not be fully run in the isolated environment; this review is not fully verified.

Details: Verification could not complete: timeout must be None or at least 2073600 seconds (24 days); shorter completion deadlines are unsupported.

Test runs: none recorded.

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Result: 🔴 could-not-verify

Verification details

Verification: The relevant tests could not be fully run in the isolated environment; this review is not fully verified.

Details: Verification could not complete: timeout must be None or at least 2073600 seconds (24 days); shorter completion deadlines are unsupported.

Test runs: none recorded.

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Result: 🔴 could-not-verify

Verification details

Verification: The relevant tests could not be fully run in the isolated environment; this review is not fully verified.

Details: Verification could not complete: timeout must be None or at least 2073600 seconds (24 days); shorter completion deadlines are unsupported.

Test runs: none recorded.

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Result: 🔴 could-not-verify

Verification details

Verification: The relevant tests could not be fully run in the isolated environment; this review is not fully verified.

Details: Verification could not complete: timeout must be None or at least 2073600 seconds (24 days); shorter completion deadlines are unsupported.

Test runs: none recorded.

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Result: 🔴 could-not-verify

Verification details

Verification: The relevant tests could not be fully run in the isolated environment; this review is not fully verified.

Details: Verification could not complete: timeout must be None or at least 2073600 seconds (24 days); shorter completion deadlines are unsupported.

Test runs: none recorded.

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Result: 🔴 could-not-verify

Verification details

Verification: The relevant tests could not be fully run in the isolated environment; this review is not fully verified.

Details: Verification could not complete: timeout must be None or at least 2073600 seconds (24 days); shorter completion deadlines are unsupported.

Test runs: none recorded.

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Result: 🔴 could-not-verify

Verification details

Verification: The relevant tests could not be fully run in the isolated environment; this review is not fully verified.

Details: Verification could not complete: timeout must be None or at least 2073600 seconds (24 days); shorter completion deadlines are unsupported.

Test runs: none recorded.

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Result: 🔴 could-not-verify

Verification details

Verification: The relevant tests could not be fully run in the isolated environment; this review is not fully verified.

Details: Verification could not complete: timeout must be None or at least 2073600 seconds (24 days); shorter completion deadlines are unsupported.

Test runs: none recorded.

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Result: 🔴 could-not-verify

Verification details

Verification: The relevant tests could not be fully run in the isolated environment; this review is not fully verified.

Details: Verification could not complete: timeout must be None or at least 2073600 seconds (24 days); shorter completion deadlines are unsupported.

Test runs: none recorded.

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Result: 🔴 could-not-verify

Verification details

Verification: The relevant tests could not be fully run in the isolated environment; this review is not fully verified.

Details: Verification could not complete: timeout must be None or at least 2073600 seconds (24 days); shorter completion deadlines are unsupported.

Test runs: none recorded.

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Result: 🔴 could-not-verify

Verification details

Verification: The relevant tests could not be fully run in the isolated environment; this review is not fully verified.

Details: Verification could not complete: timeout must be None or at least 2073600 seconds (24 days); shorter completion deadlines are unsupported.

Test runs: none recorded.

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Result: 🔴 could-not-verify

Verification details

Verification: The relevant tests could not be fully run in the isolated environment; this review is not fully verified.

Details: Verification could not complete: timeout must be None or at least 2073600 seconds (24 days); shorter completion deadlines are unsupported.

Test runs: none recorded.

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Result: 🔴 could-not-verify

Verification details

Verification: The relevant tests could not be fully run in the isolated environment; this review is not fully verified.

Details: Verification could not complete: timeout must be None or at least 2073600 seconds (24 days); shorter completion deadlines are unsupported.

Test runs: none recorded.

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Result: 🔴 could-not-verify

Verification details

Verification: The relevant tests could not be fully run in the isolated environment; this review is not fully verified.

Details: Verification could not complete: timeout must be None or at least 2073600 seconds (24 days); shorter completion deadlines are unsupported.

Test runs: none recorded.

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Result: 🔴 could-not-verify

Verification details

Verification: The relevant tests could not be fully run in the isolated environment; this review is not fully verified.

Details: Verification could not complete: timeout must be None or at least 2073600 seconds (24 days); shorter completion deadlines are unsupported.

Test runs: none recorded.

@heejaechang

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Result: 🔴 could-not-verify

Verification details

Verification: The relevant tests could not be fully run in the isolated environment; this review is not fully verified.

Details: Verification could not complete: timeout must be None or at least 2073600 seconds (24 days); shorter completion deadlines are unsupported.

Test runs: none recorded.

@heejaechang

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Result: 🔴 could-not-verify

Verification details

Verification: The relevant tests could not be fully run in the isolated environment; this review is not fully verified.

Details: Verification could not complete: timeout must be None or at least 2073600 seconds (24 days); shorter completion deadlines are unsupported.

Test runs: none recorded.

@heejaechang

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Result: 🔴 could-not-verify

Verification details

Verification: The relevant tests could not be fully run in the isolated environment; this review is not fully verified.

Details: Verification could not complete: timeout must be None or at least 2073600 seconds (24 days); shorter completion deadlines are unsupported.

Test runs: none recorded.

@heejaechang

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Result: 🔴 could-not-verify

Verification details

Verification: The relevant tests could not be fully run in the isolated environment; this review is not fully verified.

Details: Verification could not complete: timeout must be None or at least 2073600 seconds (24 days); shorter completion deadlines are unsupported.

Test runs: none recorded.

@heejaechang

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Result: 🔴 could-not-verify

Verification details

Verification: The relevant tests could not be fully run in the isolated environment; this review is not fully verified.

Details: Verification could not complete: timeout must be None or at least 2073600 seconds (24 days); shorter completion deadlines are unsupported.

Test runs: none recorded.

@heejaechang

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Result: 🔴 could-not-verify

Verification details

Verification: The relevant tests could not be fully run in the isolated environment; this review is not fully verified.

Details: Verification could not complete: timeout must be None or at least 2073600 seconds (24 days); shorter completion deadlines are unsupported.

Test runs: none recorded.

@heejaechang

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Result: 🔴 could-not-verify

Verification details

Verification: The relevant tests could not be fully run in the isolated environment; this review is not fully verified.

Details: Verification could not complete: timeout must be None or at least 2073600 seconds (24 days); shorter completion deadlines are unsupported.

Test runs: none recorded.

Explicitly select stable Rust for smoke, E2E and integration CI while retaining the full-length action SHA pins.

Co-authored-by: Copilot App <223556219+Copilot@users.noreply.github.com>
@StellaHuang95

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Fixed the CI blocker in 6d33058. The pinned dtolnay/rust-toolchain revision requires an explicit toolchain input; unlike @stable, the SHA does not implicitly select stable Rust. Every smoke matrix entry previously exited at Rust setup with 'toolchain' is a required input, before tests ran, so E2E and integration jobs were skipped. All six Rust setup steps across PR and push CI now specify toolchain: stable; the full-length SHA pins and Dependabot cooldown are unchanged.

The updated PR/CI Check run is green: all 52 jobs passed, including all smoke, E2E, integration, and multi-root matrix entries. One Windows/Python 3.12 integration environment-deletion timeout passed on a failed-job rerun without code or test changes. Both blocking review threads are resolved, and the stale changes-requested label has been cleared. Fresh approval is still required before merge. Run: https://github.com/microsoft/vscode-python-environments/actions/runs/40555160898

@StellaHuang95
Stella Huang (StellaHuang95) merged commit 6a64564 into microsoft:main Oct 27, 2026
109 of 110 checks passed
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