CVE-2026-59196 pnpm: hoisted install imports lockfile alias outside node_modules
A crafted lockfile alias in pnpm hoisted installs can escape node_modules or overwrite internal files, potentially enabling code execution.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- Available
What is CVE-2026-59196?
CVE-2026-59196 is a high-severity path traversal vulnerability in pnpm, published on 6 Jul 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official description
pnpm is a package manager. Prior to 10.34.4 and 11.7.0, a crafted lockfile alias could be joined directly under a hoisted node_modules directory. Traversal aliases could escape that directory, while reserved aliases such as .bin or .pnpm could overwrite pnpm-owned layout. This vulnerability is fixed in 10.34.4 and 11.7.0.
Which versions are affected by CVE-2026-59196?
4 open source packages ship an affected version, including pnpm. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
pnpm npm | All versions | 10.34.4 |
pnpm npm | All versions | 10.34.4 |
pnpm npm | From 11.0.0 | 11.7.0 |
pnpm npm | From 11.0.0 | 11.7.0 |
Products include Pnpm Pnpm.
How do I fix CVE-2026-59196?
Upgrade pnpm to a fixed version for your release line: 10.34.4 or 11.7.0.
Upgrade, and resolve every user-supplied path against an allowed base folder before opening it. More about Path traversal.
Is CVE-2026-59196 being exploited?
There is no known exploitation of CVE-2026-59196 in the wild and no public exploit code.
Other vulnerabilities in pnpm
- CVE-2026-50016 pnpm: Transitive dependency alias path traversal allows project path override via symlink replacement
- CVE-2026-55698 pnpm: Project env lockfile can short-circuit package-manager resolution and execute lockfile-selected pnpm bytes
- CVE-2025-69264 pnpm v10+ Bypass "Dependency lifecycle scripts execution disabled by default"
- CVE-2022-26183 Untrusted Search Path in PNPM
- CVE-2026-59195 pnpm: Path traversal in configDependencies env lockfile allows symlink creation outside node_modules/.pnpm-config
Sources
Also known as GHSA-fr4h-3cph-29xv, MINI-hj5p-cfxp-2q4g, ROOT-APP-NPM-GHSA-fr4h-3cph-29xv.