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Public proof of conceptFix available

CVE-2026-50016

A public proof of concept exists; no exploitation attested.

  • Published2026-06-25
  • Fixed in11.4.0 · 10.34.0
  • WeaknessCWE-23

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

pnpm is a package manager. Prior to 10.34.0 and 11.4.0, pnpm allows a transitive dependency alias from registry package metadata to contain path traversal segments. During install, pnpm later uses that alias as a filesystem path when linking dependency nodes. As a result, a registry package can cause `pnpm install --ignore-scripts` to replace paths in the current project with symlinks to attacker-controlled dependency package directories. This vulnerability is fixed in 10.34.0 and 11.4.0.

Timeline

dates in UTC
  1. 2026-06-2518:16CVE publishedNVD

Observed activity

isMalicious corpus · updated 2026-10-23 21:37 UTC
Indicators tagged with this CVE, per day0 indicators over 7 days
Block these indicators
  • Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2026-50016?format=txt
  • CSV export: https://api.ismalicious.com/edl/cve/CVE-2026-50016?format=csv
  • TAXII collection of exploited CVEs
  • The EDL and CSV take an API key on the Pro plan.

Versions per branch

NVD · OSV
Pnpm
BranchAffectedFixed in
11.x≥ 11.0.0, < 11.4.011.4.0
10.34< 10.34.010.34.0

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Fix

  1. Update Pnpm to 11.4.0 · 10.34.0

Advisories and patches

Detection

Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Proof-of-concept repositories
none listed
PoC-in-GitHub

Sources

  • NVDCVE recordread 2026-10-23
  • CISA-ADPSSVC decisionpoc2026-06-25
  • OpenCVESSVC decisionpoc—
  • CNACVSS 3.18.8read 2026-10-23
  • CNAweakness (CWE)CWE-23read 2026-10-23
  • FIRST EPSSEPSS score0.5 %2026-10-23
  • OSVaffected packages—

Technical details

CVSS v3 Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Published
2026-06-25
Last Modified
2026-06-29
NVD status
Analyzed

Frequently asked questions

What is CVE-2026-50016?

pnpm is a package manager. Prior to 10.34.0 and 11.4.0, pnpm allows a transitive dependency alias from registry package metadata to contain path traversal segments. During install, pnpm later uses that alias as a filesystem path when linking dependency nodes. As a result, a registry package can cause `pnpm install --ignore-scripts` to replace paths in the current project with symlinks to attacker-controlled dependency package directories. This vulnerability is fixed in 10.34.0 and 11.4.0.

Is CVE-2026-50016 actively exploited?

A proof-of-concept exploit exists for CVE-2026-50016, but active exploitation has not been confirmed at this time.

What is the CVSS score for CVE-2026-50016?

CVE-2026-50016 has a CVSS v3 base score of 8.8 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.

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