---
id: CVE-2026-101043
title: >-
  pnpm versions 11.0.0 before 11.11.0 and 10.7.0 before 10.34.5 expand ${VAR}
  environment-variable placeholders in the httpProxy, httpsProxy, and noProxy
  settings read from a project's pnpm-workspace.yaml
summary: >-
  pnpm versions 11.0.0 before 11.11.0 and 10.7.0 before 10.34.5 expand ${VAR}
  environment-variable placeholders in the httpProxy, httpsProxy, and noProxy
  settings read from a project's pnpm-workspace.yaml. Because the manifest is
  repositor…
severity: high
cvss: 7.4
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:N/A:N'
cwe:
  - CWE-201
vendor: pnpm
product: pnpm
affected:
  - pnpm >= 11.0.0 < 11.11.0
  - pnpm >= 10.7.0 < 10.34.5
published: '2026-09-27'
updated: '2026-09-27'
sourceUpdated: '2026-09-27T18:16:29.700'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-101043'
references:
  - url: 'https://github.com/pnpm/pnpm/security/advisories/GHSA-vx52-2968-3vc6'
    label: disclosure@vulncheck.com
  - url: >-
      https://www.vulncheck.com/advisories/pnpm-11.0.0-before-11.11.0-environment-variable-exfiltration-via-proxy-settings
    label: disclosure@vulncheck.com
tags:
  - nvd
  - cve.org
ingestedAt: '2026-09-27T17:56:02.213Z'
---

## Overview

pnpm versions 11.0.0 before 11.11.0 and 10.7.0 before 10.34.5 expand ${VAR} environment-variable placeholders in the httpProxy, httpsProxy, and noProxy settings read from a project's pnpm-workspace.yaml. Because the manifest is repository-controlled and the proxy keys were omitted from the request-destination key set that otherwise suppresses placeholder expansion for untrusted manifests (as already done for registry, pnprServer, registries and namedRegistries), an attacker who controls a repository's pnpm-workspace.yaml can cause a victim who clones the repository and runs a pnpm command (e.g. pnpm install) to expand environment secrets such as NPM_TOKEN or GITHUB_TOKEN into a proxy hostname or userinfo and route install traffic — and the corresponding DNS lookups — through an attacker-controlled host. The exfiltration occurs during configuration loading, before any lifecycle script executes. Fixed in pnpm 11.11.0 and 10.34.5.

## Remediation

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