pnpm: A tarball dependency's manifest `name` escapes node_modules → arbitrary file write/overwrite on install — GHSA-VQ4V-J7R6-JQ4M

Summary

## Summary When resolving a package, pnpm uses the resolved **manifest `name`** as a raw path segment for the isolated-linker import target. A tarball dependency whose `package.json` `name` is a scoped path traversal (`@x/../../…/<abs path>`) is therefore extracted **outside `node_modules`**, to an attacker-chosen absolute path, and can **overwrite existing files** there. Attacker controls the destination,…

Timeline

Published by source

2026-09-02

Risk context

• Reported severity or threat level: high.
• Reported CVSS score: 7.5 out of 10.
• Reported EPSS value: 0.00413.
• 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
• CVE Record
• NVD

Evidence and provenance

Canonical advisory ID

GHSA-VQ4V-J7R6-JQ4M

Source

GitHub

Vendor

GitHub

Published by source

2026-09-02

Last source activity

2026-09-02

Additional identifiers

CVE-2026-82393

Curated by

hlukh.ch

Related advisories and connections

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