CVE-2026-55699 Details
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.
A vulnerability in pnpm, a package manager, allows reserved bin object keys such as empty strings, dots, and double dots to bypass pnpm's bin-name validation. This issue is present in versions prior to 10.34.2 and 11.0.0 through 11.5.3. When a malicious package is installed globally, subsequent global removal, update, or add-replacement operations can re-derive these names from the manifest and use them to target the global bin directory or its parent, leading to unintended deletion of files.
Users should update to pnpm versions 10.34.2 or 11.5.3 and later, where this vulnerability has been fixed.
Metrics
CVSS 4.0 Severity and Vector Strings:
No CVSS 4.0 data is available for this CVE.
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
CISA-ADP
Assessed Jun 25, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://github.com/pnpm/pnpm/security/advisories/GHSA-4gxm-v5v7-fqc4 | CISA-ADP | ExploitVendor Advisory |
| https://github.com/pnpm/pnpm/security/advisories/GHSA-4gxm-v5v7-fqc4 | [email protected] | ExploitVendor Advisory |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-22 | Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') | [email protected] |
| CWE-73 | External Control of File Name or Path | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| pnpm pnpm | < 10.34.2 >= 11.0.0, < 11.5.3 |
CPE
Remediation
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Change History
3 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 29, 2026 | Initial Analysis | [email protected] |
| Jun 25, 2026 | CVE Modified | CISA-ADP |
| Jun 25, 2026 | New CVE Received | [email protected] |