CVE-2026-82392
pnpm: Virtual store linker path traversal via unvalidated depPath name in lockfileToDepGraph
Impact
pnpm is a package manager. Prior to 10.34.5 and from 11.0.0 until 11.11.0, pnpm parses the package name from attacker-controlled pnpm-lock.yaml packages keys with dp.parse(depPath).name and uses it without validation in deps/graph-builder/src/lockfileToDepGraph.ts and pnpm11/deps/graph-builder/src/lockfileToDepGraph.ts. The name reaches path.join(modules, pkgName), storeController.importPackage, and pnpm11/lockfile/to-pnp/src/index.ts, allowing package contents to be written outside node_modules when a user runs pnpm install. When dangerouslyAllowAllBuilds or a matching allowBuilds entry permits lifecycle scripts, the escaped package can execute code with the user's privileges. This issue is fixed in versions 10.34.5 and 11.11.0.
Affected packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| npm | pnpm | < 10.34.5 | 10.34.5 |
Weakness classification
References
- NVD record
- CVE.org record
- GitHub advisory
- https://github.com/advisories/GHSA-c59q-g84q-2gj5
- https://github.com/pnpm/pnpm/security/advisories/GHSA-c59q-g84q-2gj5
- https://nvd.nist.gov/vuln/detail/CVE-2026-82392
- https://github.com/pnpm/pnpm/pull/12872
- https://github.com/pnpm/pnpm/pull/12890
- https://github.com/pnpm/pnpm/commit/51300fd41c5e4c8f47635108e373cc3d1f324fa7
- https://github.com/pnpm/pnpm/commit/78e29fe5583a1e5d69ea05e414eff310f78d5ed9
- https://github.com/pnpm/pnpm/releases/tag/v10.34.5
- https://github.com/pnpm/pnpm/releases/tag/v11.11.0