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OpenAdvisories
Medium · 6.5 CVE-2026-23890 EUVD-2026-4656GHSA-xpqm-wm3m-f34h

pnpm scoped bin name Path Traversal allows arbitrary file creation outside node_modules/.bin

Published Jan 26, 2026 · Updated Jan 27, 2026 · Assigned by GitHub_M

Description

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 and CI/CD pipelines using pnpm. It can lead to overwriting config files, scripts, or other sensitive files. Version 10.28.1 contains a patch.

Affected products

VendorProductAffectedFixed
pnpm pnpm < 10.28.1 —

Fixed in Linux distributions

Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.

ReleasePackageFixed inAdvisory
Alpine v3.23 pnpm 10.33.4-r0 —

Wolfi

ReleasePackageFixed inAdvisory
Wolfi rolling pnpm-stage0 No fix yet —

Affected packages

EcosystemPackageAffectedFixedRecord
npm pnpm < 10.28.1 10.28.1 GHSA-xpqm-wm3m-f34h

References