{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-101043","assignerOrgId":"83251b91-4cc7-4094-a5c7-464a1b83ea10","state":"PUBLISHED","assignerShortName":"VulnCheck","dateReserved":"2026-09-27T15:48:49.472Z","datePublished":"2026-09-27T17:02:33.119Z","dateUpdated":"2026-09-27T17:02:33.119Z"},"containers":{"cna":{"providerMetadata":{"orgId":"83251b91-4cc7-4094-a5c7-464a1b83ea10","shortName":"VulnCheck","dateUpdated":"2026-09-27T17:02:33.119Z"},"datePublic":"2026-08-03T00:00:00.000Z","title":"pnpm 11.0.0 before 11.11.0 Environment Variable Exfiltration via Proxy Settings","descriptions":[{"lang":"en","value":"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."}],"problemTypes":[{"descriptions":[{"lang":"en","description":"Insertion of Sensitive Information Into Sent Data","cweId":"CWE-201","type":"CWE"}]}],"affected":[{"vendor":"pnpm","product":"pnpm","defaultStatus":"unaffected","packageURL":"pkg:npm/pnpm","versions":[{"version":"11.0.0","status":"affected","versionType":"semver","lessThan":"11.11.0"},{"version":"11.11.0","status":"unaffected","versionType":"semver"}]},{"vendor":"pnpm","product":"pnpm","defaultStatus":"unaffected","packageURL":"pkg:npm/pnpm","versions":[{"version":"10.7.0","status":"affected","versionType":"semver","lessThan":"10.34.5"},{"version":"10.34.5","status":"unaffected","versionType":"semver"}]}],"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:pnpm:pnpm:*:*:*:*:*:*:*:*","versionStartIncluding":"11.0.0","versionEndExcluding":"11.11.0"}]}]},{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:pnpm:pnpm:*:*:*:*:*:*:*:*","versionStartIncluding":"10.7.0","versionEndExcluding":"10.34.5"}]}]}],"metrics":[{"format":"CVSS","cvssV4_0":{"version":"4.0","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:N/VA:N/SC:H/SI:N/SA:N","attackVector":"NETWORK","attackComplexity":"LOW","attackRequirements":"NONE","privilegesRequired":"NONE","userInteraction":"PASSIVE","vulnConfidentialityImpact":"HIGH","vulnIntegrityImpact":"NONE","vulnAvailabilityImpact":"NONE","subConfidentialityImpact":"HIGH","subIntegrityImpact":"NONE","subAvailabilityImpact":"NONE","baseScore":8.3,"baseSeverity":"HIGH"}},{"format":"CVSS","cvssV3_1":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:N/A:N","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"REQUIRED","scope":"CHANGED","confidentialityImpact":"HIGH","integrityImpact":"NONE","availabilityImpact":"NONE","baseScore":7.4,"baseSeverity":"HIGH"}}],"references":[{"url":"https://github.com/pnpm/pnpm/security/advisories/GHSA-vx52-2968-3vc6","tags":["vendor-advisory"],"name":"GitHub Security Advisory (GHSA-vx52-2968-3vc6)"},{"name":"VulnCheck Advisory: pnpm 11.0.0 before 11.11.0 Environment Variable Exfiltration via Proxy Settings","tags":["third-party-advisory"],"url":"https://www.vulncheck.com/advisories/pnpm-11.0.0-before-11.11.0-environment-variable-exfiltration-via-proxy-settings"}],"x_generator":{"engine":"vulncheck-endgame"}}}}