---
id: CVE-2026-82393
title: pnpm is a package manager
summary: >-
  pnpm is a package manager. Prior to 10.34.5 and 11.11.0, pnpm accepts a scoped
  path traversal in a tarball dependency's package.json manifest name because
  pnpm11/resolving/npm-resolver/src/pickPackage.ts rejects slash characters only
  for…
severity: high
cvss: 7.5
cvssVector: 'CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H'
cwe:
  - CWE-22
  - CWE-73
  - CWE-94
vendor: pnpm
product: pnpm
affected:
  - pnpm < 10.34.5
  - 'pnpm >= 11.0.0, < 11.11.0'
patched:
  - pnpm 10.34.5
  - pnpm 11.11.0
published: '2026-08-31'
updated: '2026-09-09'
sourceUpdated: '2026-09-09T21:09:13.080'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-82393'
references:
  - url: >-
      https://github.com/pnpm/pnpm/commit/51300fd41c5e4c8f47635108e373cc3d1f324fa7
    label: security-advisories@github.com
  - url: >-
      https://github.com/pnpm/pnpm/commit/78e29fe5583a1e5d69ea05e414eff310f78d5ed9
    label: security-advisories@github.com
  - url: 'https://github.com/pnpm/pnpm/pull/12872'
    label: security-advisories@github.com
  - url: 'https://github.com/pnpm/pnpm/pull/12890'
    label: security-advisories@github.com
  - url: 'https://github.com/pnpm/pnpm/releases/tag/v10.34.5'
    label: security-advisories@github.com
  - url: 'https://github.com/pnpm/pnpm/releases/tag/v11.11.0'
    label: security-advisories@github.com
  - url: 'https://github.com/pnpm/pnpm/security/advisories/GHSA-vq4v-j7r6-jq4m'
    label: security-advisories@github.com
  - url: 'https://github.com/pnpm/pnpm/security/advisories/GHSA-vq4v-j7r6-jq4m'
    label: 134c704f-9b21-4f2e-91b3-4a467353bcc0
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2026-82393'
  - url: 'https://github.com/advisories/GHSA-vq4v-j7r6-jq4m'
  - url: >-
      https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-82393.json
  - url: 'https://access.redhat.com/security/cve/CVE-2026-82393'
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2526818'
  - url: 'https://www.cve.org/CVERecord?id=CVE-2026-82393'
tags:
  - nvd
  - ghsa
  - npm
  - csaf
  - vex
  - red-hat
epss: 0.00626
epssPercentile: 0.47806
aliases:
  - GHSA-vq4v-j7r6-jq4m
ecosystem: npm
ingestedAt: '2026-09-02T14:45:30.182Z'
---

## Overview

pnpm is a package manager. Prior to 10.34.5 and 11.11.0, pnpm accepts a scoped path traversal in a tarball dependency's package.json manifest name because pnpm11/resolving/npm-resolver/src/pickPackage.ts rejects slash characters only for unscoped names. During pnpm install, the unvalidated name reaches raw path joins in pnpm11/installing/deps-resolver/src/resolvePeers.ts, pnpm11/installing/deps-resolver/src/index.ts, and pnpm11/deps/graph-builder/src/lockfileToDepGraph.ts, causing package extraction outside node_modules and allowing attacker-controlled files to overwrite arbitrary filesystem paths even when --ignore-scripts is used. The overwrite can replace shell startup files, Git hooks, or installed package code and lead to code execution. This issue is fixed in versions 10.34.5, and 11.11.0.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.

## Package advisory (CVE-2026-82393)

Affected packages:

- `pnpm < 10.34.5`
- `pnpm >= 11.0.0, < 11.11.0`

Patched in:

- `pnpm 10.34.5`
- `pnpm 11.11.0`

Source: https://github.com/advisories/GHSA-vq4v-j7r6-jq4m

## Vendor advisories

- **Red Hat VEX** · Important · updated 2026-09-24 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-82393.json)