CVE-2026-101043

HIGHPre-NVD 7.47.4—
EchelonGraph scoreHIGH confidence

Score 7.4 from GitHub Security Advisory (severity: HIGH) published 2026-09-27. A secondary CVSS source baseline 7.4; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 4 sources updated this weekElevated
7.4EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.2%CVSS: 7.4Exploit: Elevated riskExposed services: Not assessed

A fix is available — apply it.

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.

CVSS v3
7.4
EG Score
7.4HIGHhigh confidence
EG Risk
49
EG Risk 49/100CISA SSVC

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity74% × 45%
Exploitation40% × 40%
Automatability0% × 15%
CISA SSVC: Track at low or medium mission impact; Track* at high (mission-essential systems).
Action: A fix is available. Apply it within your standard update timelines.
EPSS PROB
0.2%
EPSS %ILE
12th
KEV
Not listed

CISA SSVCTrack at low or medium mission impact; Track* at high (mission-essential systems).

A fix is available. Apply it within your standard update timelines.

Exploitation public PoC (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table

Published

September 27, 2026

Last Modified

September 30, 2026

Advisory Details (2)

Auto-updated Sep 27, 2026
🔬 Proof of concept available. Patch available. Sources: github.
generic

pnpm 11.0.0 before 11.11.0 Environment Variable Exfiltration via Proxy Settings | Advisories | VulnCheck

https://www.vulncheck.com/advisories/pnpm-11.0.0-before-11.11.0-environment-variable-exfiltration-via-proxy-settings
github Patch Available🟡 PoC Available

Environment secrets exfiltrated via env-placeholder expansion in proxy settings read from an untrusted pnpm-workspace.yaml · Advisory · pnpm/pnpm · GitHub

https://github.com/pnpm/pnpm/security/advisories/GHSA-vx52-2968-3vc6

Vendor Advisories for CVE-2026-101043(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Affected Packages

(1 across 1 ecosystem)
npm(1)
PackageVulnerable rangeFixed inDependents
pnpm—11.11.0—

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 33× in last 7d / 33× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-10-03 23:18 UTCEG score recompute
  2. 2026-10-03 23:18 UTCGHSA enrichment
  3. 2026-10-03 14:25 UTCEPSS rescore
  4. 2026-10-03 12:10 UTCGHSA enrichment
  5. 2026-10-03 01:04 UTCEG score recompute
  6. 2026-10-03 01:04 UTCGHSA enrichment
  7. 2026-10-02 13:57 UTCGHSA enrichment
  8. 2026-10-02 02:51 UTCEG score recompute
  9. 2026-10-02 02:51 UTCGHSA enrichment
  10. 2026-10-01 19:49 UTCEPSS rescore
  11. 2026-10-01 15:40 UTCGHSA enrichment
  12. 2026-10-01 04:34 UTCGHSA enrichment
  13. 2026-09-30 17:27 UTCGHSA enrichment
  14. 2026-09-30 16:27 UTCEG score recompute
  15. 2026-09-30 16:27 UTCGHSA enrichment
  16. 2026-09-30 15:53 UTCEG score recompute
  17. 2026-09-30 15:53 UTCGHSA enrichment
  18. 2026-09-30 15:02 UTCEPSS rescore
  19. 2026-09-30 13:07 UTCGHSA enrichment
  20. 2026-09-30 02:01 UTCEG score recompute
  21. 2026-09-30 02:01 UTCGHSA enrichment
  22. 2026-09-29 15:20 UTCEPSS rescore
  23. 2026-09-29 14:55 UTCGHSA enrichment
  24. 2026-09-29 03:49 UTCEG score recompute
  25. 2026-09-29 03:49 UTCGHSA enrichment
Show 8 more
  1. 2026-09-28 16:43 UTCEG score recompute
  2. 2026-09-28 16:43 UTCGHSA enrichment
  3. 2026-09-28 13:50 UTCEPSS rescore
  4. 2026-09-28 05:30 UTCEG score recompute
  5. 2026-09-28 05:30 UTCGHSA enrichment
  6. 2026-09-27 18:24 UTCEG score recompute
  7. 2026-09-27 17:20 UTCEG score recompute
  8. 2026-09-27 17:18 UTCMITRE cvelistV5first tracked

Related CVEs(same product + same CWE)

Frequently asked(5)

What is CVE-2026-101043?
CVE-2026-101043 is a high vulnerability published on September 27, 2026. 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…
When was CVE-2026-101043 disclosed?
CVE-2026-101043 was first published on September 27, 2026, with the most recent update on September 30, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-101043 actively exploited?
CVE-2026-101043 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.2% probability of exploitation in the next 30 days (12th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-101043?
CVE-2026-101043 has a CVSS base score of 7.4 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-101043?
A fix for CVE-2026-101043 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-101043 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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