CVE-2026-50015

pnpm is a package manager. Prior to 10.34.0 and 11.4.0, pnpm's patch application pipeline (@pnpm/patch-package) performs no path validation on file paths extracted from .patch files. An attacker who contributes a malicious patch file via a pull request can write attacker-controlled content to or delete arbitrary files on the filesystem during pnpm install, as the user running the install. The diff --git header paths containing ../../ sequences traverse out of the package directory, and the traversal is difficult to catch in code review because patch file diff headers are opaque to most reviewers. This vulnerability is fixed in 10.34.0 and 11.4.0.

• CWE-22

• https://github.com/pnpm/pnpm/security/advisories/GHSA-rxhj-4m44-96r4Exploit, Mitigation, Vendor Advisory
• https://github.com/pnpm/pnpm/security/advisories/GHSA-rxhj-4m44-96r4Exploit, Mitigation, Vendor Advisory

Published

Jun 25, 2026

Last Modified

Jun 29, 2026

Status

Analyzed

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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