Copyright © 2012 Red Hat, Inc. All rights reserved. Important 2026-06-25T16:41:12 pnpm: pnpm: Supply chain compromise via manipulated package source strings 7.5 CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H CWE-140

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.

A flaw was found in pnpm, a package manager. This vulnerability allows a remote attacker to bypass security checks by manipulating how package source strings are processed. By crafting a specially designed source string, an attacker could trick the system into approving and using a malicious package instead of the intended one. This could lead to the execution of unauthorized code or the installation of harmful software, severely impacting the confidentiality, integrity, and availability of the system.

This Important vulnerability in pnpm allows an attacker to bypass security checks by manipulating package source strings. This could lead to the execution of unauthorized code or the installation of malicious software. The flaw arises from the package manager's normalization of opaque locators, where an approved source string could inadvertently authorize a different, attacker-controlled source. Red Hat AMQ Broker 7 Not affected pnpm Red Hat Build of Keycloak Affected pnpm Red Hat JBoss Enterprise Application Platform 8 Not affected pnpm Red Hat JBoss Enterprise Application Platform Expansion Pack Not affected pnpm https://www.cve.org/CVERecord?id=CVE-2026-55487 https://nvd.nist.gov/vuln/detail/CVE-2026-55487 https://github.com/pnpm/pnpm/security/advisories/GHSA-5wx6-mg75-v57r