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pnpm 11.0.0 before 11.11.0 Environment Variable Exfiltration via Proxy Settings

Priority HIGH 69CWE-201Published · Updated

Key facts

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

Attack profile from CVSS 4.0 · CNA. Fix status from CNA and Red Hat. Impact type from CWE-201.

Summary

pnpm versions 11.0.0 before 11.11.0 and 10.7.0 before 10.34.5 expand ${VAR} environment-variable placeholders in the httpProxy, httpsProxy, and noProxy settings read from a project's pnpm-workspace.yaml. Because the manifest is repository-controlled and the proxy keys were omitted from the request-destination key set that otherwise suppresses placeholder expansion for untrusted manifests (as already done for registry, pnprServer, registries and namedRegistries), an attacker who controls a repository's pnpm-workspace.yaml can cause a victim who clones the repository and runs a pnpm command (e.g. pnpm install) to expand environment secrets such as NPM_TOKEN or GITHUB_TOKEN into a proxy hostname or userinfo and route install traffic — and the corresponding DNS lookups — through an attacker-controlled host. The exfiltration occurs during configuration loading, before any lifecycle script executes. Fixed in pnpm 11.11.0 and 10.34.5.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00285 21st percentileScored 2026-11-07
Fix Partial pnpm (pnpm): 11.11.0, 10.34.5Red Hat: 2 without a fix

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

VendorProductAffected versionsFixed inStatusSource
pnpmpnpm11.0.0 to before 11.11.011.11.0Patch availableCNA
pnpmpnpm10.7.0 to before 10.34.510.34.5Patch availableCNA
  • pnpm Vendorpnpm Affected 11.0.0 to before 11.11.0 Fixed in 11.11.0 Patch available CNA
  • pnpm Vendorpnpm Affected 10.7.0 to before 10.34.5 Fixed in 10.34.5 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 11.11.0
  • Fix · CNA pnpm (pnpm) Fixed in 10.34.5

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-2026-101043
  2. 2026-10-03 Alias added: GHSA-49pq-2gf3-jw76
  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