CVE-2026-23890

Summary

pnpm is a package manager. Prior to version 10.28.1, a path traversal vulnerability in pnpm's bin linking allows malicious npm packages to create executable shims or symlinks outside of node_modules/.bin. Bin names starting with @ bypass validation, and after scope normalization, path traversal sequences like ../../ remain intact. This issue affects all pnpm users who install npm packages and CI/CD pipelines using pnpm. It can lead to overwriting config files, scripts, or other sensitive files. Version 10.28.1 contains a patch.

Affected Software

Weaknesses

• CWE-23: CWE-23: Relative Path Traversal

ADP Enrichment

CISA ADP Vulnrichment

• SSVC:
• Exploitation: poc
  • Automatable: no
  • Technical Impact: partial

References

• https://github.com/pnpm/pnpm/security/advisories/GHSA-xpqm-wm3m-f34h
• https://github.com/pnpm/pnpm/commit/8afbb1598445d37985d91fda18abb4795ae5062d
• https://github.com/pnpm/pnpm/releases/tag/v10.28.1

• ←Previous
• Next→