Bug 2542146 (CVE-2026-101043) - CVE-2026-101043 pnpm: pnpm: Information disclosure via environment variable expansion in proxy settings
Summary: CVE-2026-101043 pnpm: pnpm: Information disclosure via environment variable e...
Keywords:
Status: NEW
Alias: CVE-2026-101043
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
high
high
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-09-27 17:21 UTC by OSIDB Bzimport
Modified: 2026-09-27 17:31 UTC (History)
42 users (show)

Fixed In Version:
Clone Of:
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Description OSIDB Bzimport 2026-09-27 17:21:52 UTC
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.


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