TI-2026-36847 Aliases CVE-2026-50021 GHSA-q6j5-fjx5-2mc3

pnpm: Integrity Check Bypass via Missing Lockfile Integrity Field

LOW 36CWE-354Published 2026-06-25 · Updated 2026-11-03

Key facts

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

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

Summary

pnpm is a package manager. Prior to 10.34.0 and 11.4.0, pnpm's tarball extraction worker skips integrity verification when the integrity field is absent from the lockfile resolution. If an attacker can both modify pnpm-lock.yaml to remove the integrity: field and cause the referenced registry URL to serve altered package content, pnpm install --frozen-lockfile can install the altered package without an integrity error. npm's npm ci enforces integrity by default; pnpm's behavior of silently skipping verification is a pnpm-specific fail-open gap. This vulnerability is fixed in 10.34.0 and 11.4.0.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.00181 7th percentileScored 2026-11-07

Public exploit Yes 1 exploit referenceTagged by NVD

Fix Fixed pnpm (pnpm): 10.34.0, 11.4.0pnpm (npm): 11.4.0, 10.34.1

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: None
Automatable: No
Technical impact: Total

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 10.34.0; 11.0.0 to before 11.4.0	10.34.0, 11.4.0	Patch available	CNA
—	pnpm (npm)	11.0.0 to before 11.4.0	11.4.0	Patch available	GHSA-q6j5-fjx5-2mc3
—	pnpm (npm)	before 10.34.1	10.34.1	Patch available	GHSA-q6j5-fjx5-2mc3

pnpm Vendorpnpm Affected before 10.34.0; 11.0.0 to before 11.4.0 Fixed in 10.34.0, 11.4.0 Patch available CNA
pnpm (npm) Vendor— Affected 11.0.0 to before 11.4.0 Fixed in 11.4.0 Patch available GHSA-q6j5-fjx5-2mc3
pnpm (npm) Vendor— Affected before 10.34.1 Fixed in 10.34.1 Patch available GHSA-q6j5-fjx5-2mc3

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 10.34.0, 11.4.0
Fix · GHSA-q6j5-fjx5-2mc3 pnpm (npm) Fixed in 11.4.0 Advisory →
Fix · GHSA-q6j5-fjx5-2mc3 pnpm (npm) Fixed in 10.34.1 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-2026-50021
2026-10-03 Alias added: GHSA-q6j5-fjx5-2mc3
2026-11-03 CISA SSVC decision points changed

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