Vulnerability · Published Jan 26, 2026 · Assigned by GitHub_M

CVE-2026-24131pnpm has Path Traversal via arbitrary file permission modification

Medium 6.7

In plain English

A medium-severity path traversal in pnpm from pnpm. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 19% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 4.0)6.7Medium

Exploit odds (30 days)0.3%top 80.6% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

pnpm is a package manager. Prior to version 10.28.2, when pnpm processes a package's `directories.bin` field, it uses `path.join()` without validating the result stays within the package root. A malicious npm package can specify `"directories": {"bin": "../../../../tmp"}` to escape the package directory, causing pnpm to chmod 755 files at arbitrary locations. This issue only affects Unix/Linux/macOS. Windows is not affected (`fixBin` gated by `EXECUTABLE_SHEBANG_SUPPORTED`). Version 10.28.2 contains a patch.

Affected packages & fixed versions

Ecosystem	Package	Fixed in	Advisory
Alpine:v3.23	pnpm	10.33.4-r0	ALPINE-CVE-2026-24131
npm	pnpm	10.28.2	GHSA-v253-rj99-jwpq

Affected products (as reported)

Vendor	Product	Versions
pnpm	pnpm	< 10.28.2

Weakness: CWE-22, CWE-732 · Vector: CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N

References

https://github.com/pnpm/pnpm/security/advisories/GHSA-v253-rj99-jwpq x_refsource_CONFIRM
https://github.com/pnpm/pnpm/commit/17432ad5bbed5c2e77255ca6d56a1449bbcfd943 x_refsource_MISC
https://github.com/pnpm/pnpm/releases/tag/v10.28.2 x_refsource_MISC