CVE-2026-55487

pnpm is a package manager. Prior to 10.34.2 and 11.5.3, the generic peer-suffix normalizer also stripped parenthesized text from git, URL, tarball, file, and other opaque locators. Approval for one source string could therefore authorize a different attacker-controlled source whose locator normalized to the same value. This vulnerability is fixed in 10.34.2 and 11.5.3.

CVSS v3 7.5 HIGH

7.5^/10

CVSS v3 : HIGH

Vector :

Exploitability : 1.6 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity HIGH

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://github.com/pnpm/pnpm/security/advisories/GHSA-5wx6-mg75-v57r	Exploit Vendor Advisory
https://github.com/pnpm/pnpm/security/advisories/GHSA-5wx6-mg75-v57r	Exploit Vendor Advisory

Configurations

Configuration 1 (hide)

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

History

29 Jun 2026, 21:16

Type	Values Removed	Values Added
References	~~() https://github.com/pnpm/pnpm/security/advisories/GHSA-5wx6-mg75-v57r -~~	() https://github.com/pnpm/pnpm/security/advisories/GHSA-5wx6-mg75-v57r - Exploit, Vendor Advisory
CPE		cpe:2.3:a:pnpm:pnpm::::::node.js::*
First Time		Pnpm Pnpm pnpm

25 Jun 2026, 19:16

Type	Values Removed	Values Added
References	~~() https://github.com/pnpm/pnpm/security/advisories/GHSA-5wx6-mg75-v57r -~~	() https://github.com/pnpm/pnpm/security/advisories/GHSA-5wx6-mg75-v57r -

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-2026-55487

Mitre link : CVE-2026-55487

CVE.ORG link : CVE-2026-55487

JSON object : View

Products Affected

pnpm

pnpm

CWE

CWE-346

Origin Validation Error

CWE-693

Protection Mechanism Failure

CWE-829

Inclusion of Functionality from Untrusted Control Sphere

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