pnpm: `stage download` writes outside its destination directory via manifest name/version traversal
High-risk advisory
CVE-2026-55700
Summary
pnpm: `stage download` writes outside its destination directory via manifest name/version traversal
Why it matters
GitHub has published a reviewed security advisory for pnpm. Prioritize it with other application dependency updates, especially because EPSS places it in the 17% percentile.
Operator check
Check whether pnpm is present in application dependency manifests, lockfiles, or build images. Review the GitHub advisory and upgrade to a patched version where available. EPSS probability: 0.3%; percentile: 17%.
Sources
PatchBrief uses public sources. It does not scan environments, verify exposure, or replace vendor guidance.