# CVE-2026-82392: pnpm virtual store linker path traversal via unvalidated depPath

Source: https://junglewise.ai/threats/cve-2026-82392-pnpm-virtual-store-linker-path-traversal-via-unvalidated-deppath  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-08-31. Updated: 2026-09-25  
License: CC BY 4.0 with a link back

CVE-2026-82392 · Severity: high · CVSS 7.1 · Published 2026-08-31

pnpm is a package manager that installs JavaScript dependencies. A crafted lockfile (pnpm-lock.yaml) can cause pnpm to write package files to arbitrary locations on a user's filesystem instead of the intended dependency folder when running `pnpm install`. An attacker who commits a malicious lockfile to a repository can compromise any developer or system that installs dependencies, leading to file overwrites in sensitive locations like git hooks (enabling code execution) or binary directories.

Technologies: [pnpm (npm)](https://junglewise.ai/threats/technologies/pnpm). Vendors: [npm](https://junglewise.ai/threats/vendors/npm).

## Quick answers

**Is CVE-2026-82392 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-82392 being exploited in the wild.

**How severe is CVE-2026-82392?** High severity, with a CVSS score of 7.1, published 31 August 2026.

**Which products and versions are affected?** pnpm (npm) SEMVER:introduced=0,fixed=10.34.5.

**Is there a fix for CVE-2026-82392?** Yes. pnpm (npm): upgrade to 10.34.5 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2026-82392 attacked?** It is attacked over the network, in a software library.

**Am I affected by CVE-2026-82392?** Check whether you run pnpm (npm) at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## How to fix

- pnpm (npm): upgrade to 10.34.5 or later

  ```sh
  npm install pnpm@10.34.5
  ```


## Technical details

This is a path traversal vulnerability (CWE-22) in pnpm's lockfile parsing and package installation flow. The vulnerable code extracts package names from lockfile `packages` keys using `dp.parse(depPath).name` without validation; a depPath like `../../../tmp/pwned@1.0.0` yields a name of `../../../tmp/pwned`. This unvalidated name is then passed to `path.join(modules, pkgName)` in `lockfileToDepGraph.ts:233`, allowing the resolved path to escape the virtual store and point to arbitrary locations (e.g., `/tmp/pwned`). The package content is subsequently written to this traversed path via `storeController.importPackage()`. Attack requires the victim to run `pnpm install` on a repository containing a crafted lockfile—user interaction is required but typical for development workflows. No authentication is needed. The same flaw affects the PnP linker configuration and can escalate to RCE if `dangerouslyAllowAllBuilds: true` is set, allowing postinstall scripts to execute at the traversed path. Patches are available in versions 10.34.5 and 11.11.0.

## Affected products

- pnpm pnpm < 10.34.5, >= 11.0.0 < 11.11.0

## Identifiers

- CVE-2026-82392
- GHSA-c59q-g84q-2gj5

## Timeline

- 2026-09-02: disclosed: GitHub Security Advisory GHSA-c59q-g84q-2gj5 published
- 2026: patched: Fixed in pnpm 10.34.5 and 11.11.0

## References

- [https://api.github.com/users/manus-use](https://api.github.com/users/manus-use)
- [https://github.com/manus-use](https://github.com/manus-use)
- [https://api.github.com/users/manus-use/gists%7B/gist_id%7D](https://api.github.com/users/manus-use/gists%7B/gist_id%7D)
- [https://api.github.com/users/manus-use/repos](https://api.github.com/users/manus-use/repos)
- [https://avatars.githubusercontent.com/u/213290975?v=4](https://avatars.githubusercontent.com/u/213290975?v=4)
- [https://api.github.com/users/manus-use/events%7B/privacy%7D](https://api.github.com/users/manus-use/events%7B/privacy%7D)

## Related threats

- [pnpm environment secret exfiltration via proxy settings in workspace manifest](https://junglewise.ai/threats/pnpm-environment-secret-exfiltration-via-proxy-settings-in-workspace-f6626cca)
- [pnpm pacquet path traversal in lockfile dependency symlinks](https://junglewise.ai/threats/pnpm-pacquet-path-traversal-in-lockfile-dependency-symlinks-dc3f81d1)
- [pnpm tarball dependency manifest name path traversal arbitrary file write](https://junglewise.ai/threats/cve-2026-82393-pnpm-tarball-dependency-manifest-name-path-traversal-arbitrary)
- [pnpm path traversal via crafted lockfile alias](https://junglewise.ai/threats/cve-2026-59196-pnpm-path-traversal-via-crafted-lockfile-alias)
- [pnpm path traversal in configDependencies symlink creation](https://junglewise.ai/threats/cve-2026-59195-pnpm-path-traversal-in-configdependencies-symlink-creation)