Bug 2433090 (CVE-2026-23890)

Summary: CVE-2026-23890 pnpm: pnpm: Arbitrary code execution via path traversal in bin linking
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
Status: NEW --- QA Contact:
Severity: medium Docs Contact:
Priority: medium    
Version: unspecifiedCC: asoldano, bbaranow, bmaxwell, brian.stansberry, darran.lofthouse, dosoudil, istudens, ivassile, iweiss, mosmerov, msvehla, nwallace, pberan, pesilva, pjindal, pmackay, rstancel, smaestri, tom.jenkinson
Target Milestone: ---Keywords: Security
Target Release: ---   
Hardware: All   
OS: Linux   
Whiteboard:
Fixed In Version: Doc Type: ---
Doc Text:
A flaw was found in pnpm, a package manager. A remote attacker can exploit a path traversal vulnerability by crafting malicious npm packages. This vulnerability allows the attacker to bypass validation by using bin names starting with an "@" symbol, enabling them to create executable shims or symbolic links (symlinks) outside of the designated `node_modules/.bin` directory. This could lead to arbitrary code execution or privilege escalation on the affected system.
Story Points: ---
Clone Of: Environment:
Last Closed: Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:

Description OSIDB Bzimport 2026-01-26 22:01:44 UTC
pnpm is a package manager. Prior to version 10.28.1, a path traversal vulnerability in pnpm's bin linking allows malicious npm packages to create executable shims or symlinks outside of `node_modules/.bin`. Bin names starting with `@` bypass validation, and after scope normalization, path traversal sequences like `../../` remain intact. This issue affects all pnpm users who install npm packages, CI/CD pipelines using pnpm, and those who can overwrite config files, scripts, or other sensitive files. Version 10.28.1 contains a patch.