{
  "fix": "Node.js 20 20.20.0",
  "url": "https://patchblox.com/security/fix/windows-app/openjs.nodejs.20-20.20.0",
  "summary": "Node.js 20 20.20.0, released January 12, 2026, fixes 6 CVEs in Node.js 20. None of them is reported as exploited. Patch Radar priority: High. The latest Node.js 20 is 20.20.2, which also fixes every one of these CVEs.",
  "platform": "windows-app",
  "type": "app-version",
  "title": "Node.js 20 20.20.0",
  "released": "2026-01-12T00:00:00Z",
  "priority": "High",
  "priorityTier": 3,
  "priorityReason": "Closes CVE-2025-59465, high severity",
  "supported": true,
  "cveCount": 6,
  "exploitedCveCount": 0,
  "kevCveCount": 0,
  "ransomwareCveCount": 0,
  "maxEpss": 0.03962,
  "maxCvss": 9.1,
  "appliesTo": [
    {
      "product": "Node.js 20",
      "productUrl": "https://patchblox.com/security/product/windows-app/node.js-20",
      "fixedVersion": "20.20.0",
      "latestVersion": "20.20.2",
      "supported": true
    }
  ],
  "supersededBy": {
    "product": "Node.js 20",
    "latestVersion": "20.20.2",
    "productUrl": "https://patchblox.com/security/product/windows-app/node.js-20"
  },
  "cves": [
    {
      "cveId": "CVE-2025-59465",
      "url": "https://patchblox.com/security/cve/CVE-2025-59465",
      "title": "Node.js 20 and 3 others: Uncontrolled Resource Consumption",
      "priority": "High",
      "severity": "Important",
      "cvss": 7.5,
      "epss": 0.03962,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2025-55131",
      "url": "https://patchblox.com/security/cve/CVE-2025-55131",
      "title": "Node.js and 3 others: Buffer Copy without Checking Size of Input (\u0027Classic Buffer Overflow\u0027)",
      "priority": "High",
      "severity": "Important",
      "cvss": 7.5,
      "epss": 0.03455,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2025-55130",
      "url": "https://patchblox.com/security/cve/CVE-2025-55130",
      "title": "Node.js 20 and 3 others: Authentication Bypass by Alternate Name",
      "priority": "High",
      "severity": "Important",
      "cvss": 9.1,
      "epss": 0.01697,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-21637",
      "url": "https://patchblox.com/security/cve/CVE-2026-21637",
      "title": "HackerOne: CVE-2026-21637 TLS PSK/ALPN Callback Exceptions Bypass Error Handlers",
      "priority": "High",
      "severity": "Moderate",
      "cvss": 7.5,
      "epss": 0.01119,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2025-59466",
      "url": "https://patchblox.com/security/cve/CVE-2025-59466",
      "title": "Node.js 20 and 3 others: Uncaught Exception",
      "priority": "High",
      "severity": "Important",
      "cvss": 7.5,
      "epss": 0.00683,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2025-55132",
      "url": "https://patchblox.com/security/cve/CVE-2025-55132",
      "title": "Node.js 20 and 3 others: Incorrect Default Permissions",
      "priority": "High",
      "severity": "Important",
      "cvss": 7.5,
      "epss": 0.0026,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    }
  ],
  "dataAsOf": "2026-11-09T01:18:40Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}