TI-2026-36841 Aliases CVE-2026-50015 GHSA-rxhj-4m44-96r4

pnpm: Arbitrary File Write/Delete via Malicious Patch File (Path Traversal)

HIGH 65CWE-22Published 2026-06-25 · Updated 2026-06-25

Key facts

Attack vector: Network
Privileges required: Low
User interaction: Required
Attack complexity: Low
Impact type: —
Confidentiality · integrity · availability: None · High · High
Fix status: Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA and GitHub.

Summary

pnpm is a package manager. Prior to 10.34.0 and 11.4.0, pnpm's patch application pipeline (@pnpm/patch-package) performs no path validation on file paths extracted from .patch files. An attacker who contributes a malicious patch file via a pull request can write attacker-controlled content to or delete arbitrary files on the filesystem during pnpm install, as the user running the install. The diff --git header paths containing ../../ sequences traverse out of the package directory, and the traversal is difficult to catch in code review because patch file diff headers are opaque to most reviewers. This vulnerability is fixed in 10.34.0 and 11.4.0.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV

EPSS 0.00428 37th percentileScored 2026-11-07

Public exploit Yes 1 exploit referenceTagged by NVD

Fix Fixed pnpm (pnpm): 10.33.4, 11.4.0pnpm (npm): 10.34.0, 11.4.0

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: Poc
Automatable: No
Technical impact: Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
pnpm	pnpm	before 10.33.4; 11.0.0 to before 11.4.0	10.33.4, 11.4.0	Patch available	CNA
—	pnpm (npm)	before 10.34.0	10.34.0	Patch available	GHSA-rxhj-4m44-96r4
—	pnpm (npm)	11.0.0 to before 11.4.0	11.4.0	Patch available	GHSA-rxhj-4m44-96r4

pnpm Vendorpnpm Affected before 10.33.4; 11.0.0 to before 11.4.0 Fixed in 10.33.4, 11.4.0 Patch available CNA
pnpm (npm) Vendor— Affected before 10.34.0 Fixed in 10.34.0 Patch available GHSA-rxhj-4m44-96r4
pnpm (npm) Vendor— Affected 11.0.0 to before 11.4.0 Fixed in 11.4.0 Patch available GHSA-rxhj-4m44-96r4

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:pnpm:pnpm::::::node.js::*	before 10.34.0; 11.0.0 to before 11.4.0	Vulnerable	pnpm

cpe:2.3:a:pnpm:pnpm:*:*:*:*:*:node.js:*:* Versions before 10.34.0; 11.0.0 to before 11.4.0 Vulnerable ·pnpm

Remediation

Fix · CNA pnpm (pnpm) Fixed in 10.33.4, 11.4.0
Fix · GHSA-rxhj-4m44-96r4 pnpm (npm) Fixed in 10.34.0 Advisory →
Fix · GHSA-rxhj-4m44-96r4 pnpm (npm) Fixed in 11.4.0 Advisory →

Vendor assessments

Red Hat

Red Hat rating: Important. Red Hat's page for this CVE →

Not affected: 4 products

Red Hat AMQ Broker 7
Red Hat Build of Keycloak
Red Hat JBoss Enterprise Application Platform 8
Red Hat JBoss Enterprise Application Platform Expansion Pack

Timeline

2026-10-02 Threatist record created from CVE-2026-50015
2026-10-03 Alias added: GHSA-rxhj-4m44-96r4

References

TI-2025-42715 pnpm v10+ Bypass "Dependency lifecycle scripts execution disabled by default" CVSS 3.1CRITICAL 9.8
TI-2023-19086 pnpm incorrectly parses tar archives relative to specification CVSS 3.1CRITICAL 9.8
TI-2026-40212 pnpm: Project env lockfile can short-circuit package-manager resolution and execute lockfile-selected pnpm bytes CVSS 3.1HIGH 8.8
TI-2026-40211 pnpm: Repository-controlled configDependencies can select a pacquet native install engine CVSS 3.1HIGH 8.8
TI-2026-40042 pnpm: manifest identity spoof satisfies allowBuilds and runs attacker lifecycle CVSS 3.1HIGH 8.8
TI-2026-36842 pnpm: Transitive dependency alias path traversal allows project path override via symlink replacement CVSS 3.1HIGH 8.8

See all 27 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences