{
  "schemaVersion": 1,
  "incident": {
    "id": "cve-2026-100721",
    "url": "https://cveboard.org/i/cve-2026-100721",
    "urlPt": "https://cveboard.org/pt/i/cve-2026-100721",
    "json": "https://cveboard.org/i/cve-2026-100721.json",
    "kind": "vuln",
    "live": false,
    "knownExploited": false,
    "severity": "critical",
    "title": "vm2: NodeVM custom resolution bypasses external path boundaries",
    "summary": "At source revision 91034466bfb7f56b95fd48083ec6ca36d058f164 of vm2 3.11.8, an untrusted NodeVM guest can turn one allowlisted custom-resolved module into authorization for a separate file whose path merely shares the resolved path's string prefix. LegacyResolver.customResolve stores the resolved path in this.",
    "titlePt": "vm2: contorno de resolução personalizada do NodeVM ignora os limites do caminho externo",
    "summaryPt": "Na revisão de origem 91034466bfb7f56b95fd48083ec6ca36d058f164 do vm2 3.11.8, um convidado NodeVM não confiável pode transformar um módulo custom-resolvido permitido em autorização para um arquivo separado cujo caminho compartilha apenas o prefixo de string do caminho resolvido. LegacyResolver.customResolve armazena o caminho resolvido aqui.",
    "cves": [
      "CVE-2026-100721"
    ],
    "ghsa": "GHSA-5h3f-q97h-ccvc",
    "cvss": {
      "score": 9.5,
      "version": "4.0"
    },
    "epss": {
      "percentage": 0.004,
      "percentile": 0.3255,
      "asOf": "2026-10-23"
    },
    "packages": [
      {
        "ecosystem": "npm",
        "name": "vm2",
        "vulnerable": "<= 3.12.1",
        "fixed": "3.12.2",
        "advisory": "GHSA-5h3f-q97h-ccvc"
      }
    ],
    "vendor": null,
    "product": null,
    "kev": null,
    "breach": null,
    "retracted": false,
    "sources": [
      {
        "label": "GitHub Advisory Database",
        "url": "https://github.com/advisories/GHSA-5h3f-q97h-ccvc"
      }
    ],
    "publishedAt": "2026-10-05T23:24:29.000Z",
    "updatedAt": "2026-10-05T23:24:29.000Z"
  },
  "live": false,
  "events": [
    {
      "id": "ghsa:GHSA-5h3f-q97h-ccvc:ghsa_published:2026-10-05T23:24:29.000Z",
      "incidentId": "cve-2026-100721",
      "type": "ghsa_published",
      "at": "2026-10-05T23:24:29.000Z",
      "detail": {
        "ghsa": "GHSA-5h3f-q97h-ccvc",
        "severity": "critical",
        "fixed": "3.12.2"
      }
    }
  ]
}