pnpm: Environment secrets exfiltrated via env-placeholder expansion in proxy settings read from an untrusted pnpm-workspace.yaml — GHSA-VX52-2968-3VC6

Summary

## Summary pnpm expands `${VAR}` environment placeholders in the `httpProxy` / `httpsProxy` / `noProxy` settings read from a project's `pnpm-workspace.yaml`. Because a project manifest is repository-controlled, a malicious repository that a victim merely clones and runs `pnpm install` in can route all install traffic through an attacker proxy whose hostname or userinfo embeds — and thereby exfiltrates — an…

Timeline

Published by source

2026-09-01

Risk context

• Reported severity or threat level: high.
• Reported CVSS score: 7.4 out of 10.
• Review exposure for the affected product or family: npm: pnpm.

Product

npm: pnpm

What to do

General, cautious steps (verify details in the official source):

• Prioritize patching or mitigation immediately (treat as actively risky).
• Identify affected product versions in your inventory and verify whether you are impacted.
• Apply vendor patches/updates or recommended mitigations as soon as available.
• Read the official advisory for exact affected versions and remediation steps.

Official advisory

• Read the official source

Evidence and provenance

Canonical advisory ID

GHSA-VX52-2968-3VC6

Source

GitHub

Vendor

GitHub

Published by source

2026-09-01

Last source activity

2026-09-01

Curated by

hlukh.ch

Related advisories and connections

These advisories are connected by shared CVE, product, vendor, source, or time signals.