Vulnerability · Published Jan 26, 2026 · Assigned by GitHub_M

CVE-2026-23890pnpm scoped bin name Path Traversal allows arbitrary file creation outside node_modules/.bin

Medium 6.5

In plain English

A medium-severity security flaw in pnpm from pnpm. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.5% (higher than 43% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)6.5Medium

Exploit odds (30 days)0.5%top 57.1% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official 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 packages & fixed versions

Ecosystem	Package	Fixed in	Advisory
Alpine:v3.23	pnpm	10.33.4-r0	ALPINE-CVE-2026-23890
npm	pnpm	10.28.1	GHSA-xpqm-wm3m-f34h

Affected products (as reported)

Vendor	Product	Versions
pnpm	pnpm	< 10.28.1

Weakness: CWE-23 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N

References

https://github.com/pnpm/pnpm/security/advisories/GHSA-xpqm-wm3m-f34h x_refsource_CONFIRM
https://github.com/pnpm/pnpm/commit/8afbb1598445d37985d91fda18abb4795ae5062d x_refsource_MISC
https://github.com/pnpm/pnpm/releases/tag/v10.28.1 x_refsource_MISC