BREW-PNPM-CVE-2026-55697 (GHSA-GJ8W-MVPF-X27X)

Vulnerability from osv_homebrew – Published: 2026-08-13 17:28 – Updated: 2026-09-24 10:51 – Source website
VLAI
Summary
pnpm: Repository-controlled configDependencies can select a pacquet native install engine
Details

pnpm is a package manager. Prior to 10.34.2 and 11.5.3, pnpm can install configDependencies declared in pnpm-workspace.yaml before command dispatch. Before the patch, a repository could declare pacquet or @pnpm/pacquet as a config dependency and pnpm treated that repository-controlled dependency as an install-engine opt-in. During install, pnpm resolved a platform-specific @pacquet/-/pacquet binary from node_modules/.pnpm-config/ and spawned it as the developer or CI user. This vulnerability is fixed in 10.34.2 and 11.5.3.

Severity
7.5 (High)
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
References
To clipboard 

{
  "affected": [
    {
      "ecosystem_specific": {
        "fix": "bump",
        "range_state": "fixed",
        "upstream_fixed_in": "11.5.3"
      },
      "package": {
        "ecosystem": "Homebrew",
        "name": "pnpm",
        "purl": "pkg:brew/pnpm"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "11.21.0"
            }
          ],
          "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": "v12.6.0"
      },
      {
        "ecosystem": "npm",
        "key": "pkg:npm/pnpm@12.6.0",
        "name": "pnpm",
        "strategy": "registry",
        "subject_version": "12.6.0"
      }
    ]
  },
  "details": "pnpm is a package manager. Prior to 10.34.2 and 11.5.3, pnpm can install configDependencies declared in pnpm-workspace.yaml before command dispatch. Before the patch, a repository could declare pacquet or @pnpm/pacquet as a config dependency and pnpm treated that repository-controlled dependency as an install-engine opt-in. During install, pnpm resolved a platform-specific @pacquet/\u003cplatform\u003e-\u003carch\u003e/pacquet binary from node_modules/.pnpm-config/\u003cpackageName\u003e and spawned it as the developer or CI user. This vulnerability is fixed in 10.34.2 and 11.5.3.",
  "id": "BREW-pnpm-CVE-2026-55697",
  "modified": "2026-09-24T10:51:13Z",
  "published": "2026-08-13T17:28:25Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/55xxx/CVE-2026-55697.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/pnpm/pnpm/security/advisories/GHSA-gj8w-mvpf-x27x"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-55697"
    }
  ],
  "schema_version": "1.7.3",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "pnpm: Repository-controlled configDependencies can select a pacquet native install engine",
  "upstream": [
    "GHSA-gj8w-mvpf-x27x",
    "CVE-2026-55697"
  ]
}



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