CVE-2026-55699

pnpm: reserved bin name deletes PNPM_HOME during global remove

State: Published
Severity: 6.5 Medium
Published: Jun 25, 2026
Updated: Jun 25, 2026
Reserved: Jun 17, 2026

Description

pnpm is a package manager. Prior to 10.34.2 and 11.5.3, Manifest bin object keys such as "", ".", and ".." passed pnpm's bin-name guard. When a malicious package was installed globally, later global remove, update, or add-replacement flows could re-derive those names from the installed manifest and pass path.join(globalBinDir, binName) to removeBin. For "." this targets the global bin directory; for ".." this targets its parent. This vulnerability is fixed in 10.34.2 and 11.5.3.

Scores

CVSS	Score	Vector	Source
3.1	6.5 Medium	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H	GitHub_M

Weaknesses

CWE-22 Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
CWE-73 External Control of File Name or Path

Affected Products

Product	Versions
pnpmpnpm	< 10.34.2Affected >= 11.0.0, < 11.5.3Affected

References

https://github.com/pnpm/pnpm/security/advisories/GHSA-4gxm-v5v7-fqc4

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