Vulnerability · Published Jun 25, 2026 · Assigned by GitHub_M

CVE-2026-55699pnpm: reserved bin name deletes PNPM_HOME during global remove

Medium 6.5

In plain English

A medium-severity path traversal in pnpm from pnpm. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 39% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)6.5Medium

Exploit odds (30 days)0.4%top 60.7% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official 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.

Affected packages & fixed versions

Ecosystem	Package	Fixed in	Advisory
npm	pnpm	10.34.2	GHSA-4gxm-v5v7-fqc4
npm	pnpm	11.5.3	GHSA-4gxm-v5v7-fqc4

Affected products (as reported)

Vendor	Product	Versions
pnpm	pnpm	< 10.34.2>= 11.0.0, < 11.5.3

Weakness: CWE-22, CWE-73 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

References

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