fix: bump postcss to patch Dependabot alert - #40
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postcss <= 8.5.17 is vulnerable to path traversal via sourceMappingURL auto-loading (Dependabot alert #28). It reaches this repo transitively through vitest -> vite, so a pnpm override is needed to move it. Resolves postcss 8.5.15 -> 8.5.25. Dev-only dependency; the vulnerable code is not present in the ncc-built dist bundle. Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
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Closes Dependabot alert #28 — PostCSS: Path Traversal in Previous Source Map Auto-Loading (sourceMappingURL) leads to Arbitrary .map File Disclosure.
Change
Added a
postcss: ">=8.5.18"pnpm override alongside the existingundicione. postcss resolves 8.5.15 → 8.5.25.An override is required because postcss is transitive —
vitest 4.1.8 → vite → postcss— so bumping a direct dependency would not move it.Impact assessment
Low. postcss is a dev-only dependency here:
distis built bynccfromsrc, so the vulnerable code never ships in the action bundle.The bump closes the alert rather than fixing a live exposure.
Verification
pnpm test— 12/12 passing.🤖 Generated with Claude Code
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