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Merge pull request #1621 from anthropics/fix/validate-frontmatter-shell-injection

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Harden validate-frontmatter workflow
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Octavian Guzu 2026-04-28 11:41:07 +01:00 committed by GitHub
commit 99832739a1
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1 changed files with 11 additions and 4 deletions
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15
.github/workflows/validate-frontmatter.yml vendored
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@ -9,6 +9,10 @@ on:
jobs:
validate:
# Fork PRs are auto-closed by close-external-prs.yml, so skip validation
# for them entirely. This also prevents untrusted filenames from forks
# from ever reaching the shell steps below.
if: github.event.pull_request.head.repo.full_name == github.repository
runs-on: ubuntu-latest
steps:
- uses: actions/checkout@v4
@ -20,16 +24,19 @@ jobs:
- name: Get changed frontmatter files
id: changed
env:
GH_TOKEN: ${{ github.token }}
PR_NUMBER: ${{ github.event.pull_request.number }}
run: |
# Use diff-filter=AMRC to exclude deleted files (D) - only Added, Modified, Renamed, Copied
FILES=$(gh pr diff ${{ github.event.pull_request.number }} --name-only --diff-filter=AMRC | grep -E '(agents/.*\.md|skills/.*/SKILL\.md|commands/.*\.md)$' || true)
FILES=$(gh pr diff "$PR_NUMBER" --name-only --diff-filter=AMRC | grep -E '(agents/.*\.md|skills/.*/SKILL\.md|commands/.*\.md)$' || true)
echo "files<<EOF" >> "$GITHUB_OUTPUT"
echo "$FILES" >> "$GITHUB_OUTPUT"
echo "EOF" >> "$GITHUB_OUTPUT"
env:
GH_TOKEN: ${{ github.token }}
- name: Validate frontmatter
if: steps.changed.outputs.files != ''
env:
FILES: ${{ steps.changed.outputs.files }}
run: |
echo "${{ steps.changed.outputs.files }}" | xargs bun .github/scripts/validate-frontmatter.ts
printf '%s\n' "$FILES" | xargs bun .github/scripts/validate-frontmatter.ts