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pacquet before 12.0.0-alpha.5 Path Traversal via lockfile alias

Priority LOW 31CWE-22Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
Passive
Attack complexity
Low
Attack requirements
None
Impact type
—
Confidentiality · integrity · availability
None · High · Low
Fix status
Partial Red Hat: 2 without a fix

Attack profile from CVSS 4.0 · CNA. Fix status from CNA and Red Hat.

Summary

pacquet, the Rust package-manager component shipped in the pnpm npm package versions >=12.0.0-alpha.0 and <12.0.0-alpha.5, does not validate dependency alias/name paths taken from a lockfile before using them in install-time filesystem joins. When a user installs a project with an attacker-supplied lockfile using --trust-lockfile or a frozen lockfile, alias entries containing path traversal segments (for example '../../escaped-link') are used when creating dependency and package links, bin destinations, hoisted entries, and virtual-store slots, allowing symlinks and directories to be created outside the intended project and node_modules boundary. Version 12.0.0-alpha.5 validates dependency names and every virtual-store slot path with a shared safe-join containment helper before any filesystem materialization, rejecting traversal, absolute, platform-specific, and reserved names with ERR_PNPM_INVALID_DEPENDENCY_NAME.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00259 17th percentileScored 2026-11-07
Fix Partial pnpm (pnpm): 12.0.0-alpha.5Red Hat: 2 without a fix

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
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

VendorProductAffected versionsFixed inStatusSource
pnpmpnpm12.0.0-alpha.0 to before 12.0.0-alpha.512.0.0-alpha.5Patch availableCNA
  • pnpm Vendorpnpm Affected 12.0.0-alpha.0 to before 12.0.0-alpha.5 Fixed in 12.0.0-alpha.5 Patch available CNA

CPE names Threatist (inferred) · 1

Inferred from how NVD named this product before; not given by a source.

CPEVersionsRoleVendor
cpe:2.3:a:pnpm:pnpm:*:*:*:*:*:*:*:*——pnpm
  • cpe:2.3:a:pnpm:pnpm:*:*:*:*:*:*:*:* Versions — — ·pnpm

Remediation

  • Fix · CNA pnpm (pnpm) Fixed in 12.0.0-alpha.5

Vendor assessments

Red Hat

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

ProductStatusPlan or fix
Red Hat AMQ Broker 7AffectedNo fix yet
Red Hat Build of KeycloakAffectedNo fix yet
Not affected: 5 products
  • Red Hat AMQ Broker 7
  • Red Hat Hardened Images
  • Red Hat JBoss Enterprise Application Platform 8
  • Red Hat JBoss Enterprise Application Platform Expansion Pack
  • Red Hat OpenShift GitOps

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-101044
  2. 2026-10-03 Alias added: GHSA-qj85-gv7w-fqmr
  3. 2026-10-18 Affected versions changed · Red Hat

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 31 →

Sources