Pin GitHub Actions to commit SHAs for improved security #42
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## Summary Pin all GitHub Actions dependencies to their full commit SHAs instead of mutable version tags to mitigate supply chain attacks. ## Changes - `actions/checkout@v6` → `actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8` - `ruby/setup-ruby@v1` → `ruby/setup-ruby@90be1154f987f4dc0fe0dd0feedac9e473aa4ba8` ## Why Using version tags (e.g., `@v6`) leaves workflows vulnerable to supply chain attacks, as tags are mutable and can be modified by attackers who gain write access to an action's repository. Pinning to commit SHAs ensures immutable references. See: [CVE-2025-30066](https://www.cve.org/CVERecord?id=CVE-2025-30066)
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Summary
Pin all GitHub Actions dependencies to their full commit SHAs instead of mutable version tags to mitigate supply chain attacks.
Changes
actions/checkout@v6→actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8ruby/setup-ruby@v1→ruby/setup-ruby@90be1154f987f4dc0fe0dd0feedac9e473aa4ba8Why
Using version tags (e.g.,
@v6) leaves workflows vulnerable to supply chain attacks, as tags are mutable and can be modified by attackers who gain write access to an action's repository. Pinning to commit SHAs ensures immutable references.See: CVE-2025-30066