CVE-2026-55700

pnpm is a package manager. From 11.3.0 until 11.5.3, `pnpm stage download` derived a local filename from registry-controlled package name and version fields. A crafted manifest could escape the selected download directory and overwrite another reachable file. The merged fix validates both fields, derives one safe filename, and verifies the final destination before writing. This vulnerability is fixed in 11.5.3.

CVSS v3 7.1 HIGH

7.1^/10

CVSS v3 : HIGH

Vector :

Exploitability : 2.8 / Impact : 4.2

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact NONE

Integrity Impact HIGH

Availability Impact LOW

Scope UNCHANGED

References

Link	Resource
https://github.com/pnpm/pnpm/pull/12303	Patch
https://github.com/pnpm/pnpm/security/advisories/GHSA-v23m-ccfg-pq9h	Exploit Vendor Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:pnpm:pnpm:*:*:*:*:*:node.js:*:*

History

29 Jun 2026, 21:16

Type	Values Removed	Values Added
First Time		Pnpm Pnpm pnpm
CPE		cpe:2.3:a:pnpm:pnpm::::::node.js::*
References	~~() https://github.com/pnpm/pnpm/pull/12303 -~~	() https://github.com/pnpm/pnpm/pull/12303 - Patch
References	~~() https://github.com/pnpm/pnpm/security/advisories/GHSA-v23m-ccfg-pq9h -~~	() https://github.com/pnpm/pnpm/security/advisories/GHSA-v23m-ccfg-pq9h - Exploit, Vendor Advisory

25 Jun 2026, 18:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-06-25 18:16

Updated : 2026-06-29 21:16

NVD link : CVE-2026-55700

Mitre link : CVE-2026-55700

CVE.ORG link : CVE-2026-55700

JSON object : View

Products Affected

pnpm

pnpm

CWE

CWE-22

Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

CWE-73

External Control of File Name or Path

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