CVE-2026-55700 - Vulnerability Details - OpenCVE

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.

No CVSS v4.0

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact None

Integrity Impact High

Availability Impact Low

User Interaction Required

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Key SSVC decision points have not yet been added.

No data.

No data.

No data.

OpenCVE Enrichment is a feature of OpenCVE that uses AI to automatically link vendors and products to CVEs. Learn more on GitHub.

Vendors	Products

References

Link	Providers
https://github.com/pnpm/pnpm/pull/12303
https://github.com/pnpm/pnpm/security/advisories/GHSA-v23m-ccfg-pq9h

History

Thu, 25 Jun 2026 19:30:00 +0000

Type	Values Removed	Values Added
Metrics		ssvc `{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}`

Thu, 25 Jun 2026 17:30:00 +0000

Type	Values Removed	Values Added
Description		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.
Title		pnpm: stage download writes outside destination via manifest version traversal
Weaknesses		CWE-22 CWE-73
References		https://github.com/pnpm/pnpm/pull/12303 https://github.com/pnpm/pnpm/security/advisories/GHSA-v23m-ccfg-pq9h
Metrics		cvssV3_1 `{'score': 7.1, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:L'}`

MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published: 2026-06-25T16:47:21.488Z

Updated: 2026-06-25T18:16:35.788Z

Reserved: 2026-06-17T00:13:10.651Z

Link: CVE-2026-55700

Vulnrichment

Updated: 2026-06-25T18:16:26.535Z

NVD

No data.

Redhat

No data.

OpenCVE Enrichment

Updated: 2026-06-25T19:15:16Z

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