Medium severity6.5NVD Advisory· Published Jun 25, 2026· Updated Jun 29, 2026
CVE-2026-55699
CVE-2026-55699
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
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
pnpmnpm | < 10.34.2 | 10.34.2 |
pnpmnpm | >= 11.0.0, < 11.5.3 | 11.5.3 |
Affected products
3- Package: https://pypi.org/project/pnpm
Patches
Vulnerability mechanics
References
3- github.com/pnpm/pnpm/security/advisories/GHSA-4gxm-v5v7-fqc4nvdExploitVendor AdvisoryWEB
- github.com/advisories/GHSA-4gxm-v5v7-fqc4ghsaADVISORY
- nvd.nist.gov/vuln/detail/CVE-2026-55699ghsaADVISORY
News mentions
1- Pnpm: Thirteen Vulnerabilities Disclosed Together, Posing Risks of ACE and Supply Chain CompromiseVypr Intelligence · Jun 25, 2026