CVE-2026-24131

MEDIUM

5.5

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.

CVE Details

CVSS v3.1 Score5.5

SeverityMEDIUM

CVSS VectorCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

Attack VectorLOCAL

ComplexityLOW

Privileges RequiredLOW

User InteractionNONE

Published1/26/2026

Last Modified1/28/2026

Sourcenvd

Honeypot Sightings0

Affected Products

pnpm:pnpm

Weaknesses (CWE)

CWE-22CWE-732

References

https://github.com/pnpm/pnpm/commit/17432ad5bbed5c2e77255ca6d56a1449bbcfd943(security-advisories@github.com)

https://github.com/pnpm/pnpm/releases/tag/v10.28.2(security-advisories@github.com)

https://github.com/pnpm/pnpm/security/advisories/GHSA-v253-rj99-jwpq(security-advisories@github.com)

IOC Correlations

No correlations recorded

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