Sanitize storing of user-supplied github context data in pre-build-checks step #7838
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oscerd
approved these changes
Oct 15, 2025
aldettinger
approved these changes
Oct 15, 2025
ppalaga
reviewed
Oct 15, 2025
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| echo ${{ github.head_ref }} > ./dependabot-pr/BRANCH_REF | ||
| echo ${{ github.event.pull_request.head.sha }} > ./dependabot-pr/PR_HEAD_SHA | ||
| printf '%s\n' "${{ github.head_ref }}" > ./dependabot-pr/BRANCH_REF | ||
| printf '%s\n' "${{ github.event.pull_request.head.sha }}" > ./dependabot-pr/PR_HEAD_SHA |
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Is this supposed to be a protection against some sort of an attack? Why is printf more safe than echo?
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I thought maybe to guard against being able to sneak in \ sequences that could potentially alter the output. But now that I think about it more. I don't think head_ref or sha are vulnerable to such things.
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