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Vulnerability · Published Aug 31, 2026 · Assigned by GitHub_M

CVE-2026-82392pnpm: Virtual store linker path traversal via unvalidated depPath name in lockfileToDepGraph

High 7.1

In plain English

A high-severity path traversal in pnpm from pnpm. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.6% (higher than 50% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)7.1High
Exploit odds (30 days)0.6%top 50.3% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known

Official description

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 & fixed versions

EcosystemPackageFixed inAdvisory
npmpnpm10.34.5GHSA-c59q-g84q-2gj5
npmpnpm11.11.0GHSA-c59q-g84q-2gj5

Affected products (as reported)

VendorProductVersions
pnpm pnpm < 10.34.5>= 11.0.0, < 11.11.0

Weakness: CWE-22 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:L

References