Pin GitHub Actions to full commit SHAs#209
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Replace floating version tags with pinned commit SHAs to prevent supply chain attacks. Each action retains its version tag as a comment for readability.
MariusVolkhart
requested review from
MatthewFoster624 and
isaac57
as code owners
isaac57
approved these changes
Apr 30, 2026
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Summary
Pins all GitHub Actions to full commit SHAs instead of floating version tags.
Why: A mutable tag (e.g.
@v4) can be force-pushed to point to different — potentially malicious — code. A full SHA is immutable and cannot be redirected.Each pinned action retains its version tag as a comment for readability: