BREW-PNPM-GHSA-VX52-2968-3VC6 (GHSA-VX52-2968-3VC6)
Vulnerability from osv_homebrew – Published: 2026-09-02 09:40 – Updated: 2026-10-08 10:34 – Source websitepnpm 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.
{
"affected": [
{
"ecosystem_specific": {
"fix": "bump",
"range_state": "fixed",
"upstream_fixed_in": "11.11.0"
},
"package": {
"ecosystem": "Homebrew",
"name": "pnpm",
"purl": "pkg:brew/pnpm"
},
"ranges": [
{
"events": [
{
"introduced": "10.7.0"
},
{
"fixed": "11.11.0"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"database_specific": {
"confidence": "high",
"source": "matched",
"strategy": "git",
"upstream_evidence": [
{
"ecosystem": "GIT",
"key": "https://github.com/pnpm/pnpm",
"name": "https://github.com/pnpm/pnpm",
"strategy": "git",
"subject_version": "v12.10.1"
},
{
"ecosystem": "npm",
"key": "pkg:npm/pnpm@12.10.1",
"name": "pnpm",
"strategy": "registry",
"subject_version": "12.10.1"
}
]
},
"details": "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\u0027s 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\u0027s 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 \u2014 and the corresponding DNS lookups \u2014 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.",
"id": "BREW-pnpm-GHSA-vx52-2968-3vc6",
"modified": "2026-10-08T10:34:52Z",
"published": "2026-09-02T09:40:48Z",
"references": [
{
"type": "ADVISORY",
"url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/101xxx/CVE-2026-101043.json"
},
{
"type": "ADVISORY",
"url": "https://github.com/pnpm/pnpm/security/advisories/GHSA-vx52-2968-3vc6"
},
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-101043"
},
{
"type": "ADVISORY",
"url": "https://www.vulncheck.com/advisories/pnpm-11.0.0-before-11.11.0-environment-variable-exfiltration-via-proxy-settings"
}
],
"schema_version": "1.7.3",
"severity": [
{
"score": "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",
"type": "CVSS_V4"
}
],
"summary": "pnpm 11.0.0 before 11.11.0 Environment Variable Exfiltration via Proxy Settings",
"upstream": [
"GHSA-vx52-2968-3vc6",
"CVE-2026-101043"
]
}
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