{
  "fix": "Python 3.13 3.13.16",
  "url": "https://patchblox.com/security/fix/windows-app/python.python.3.13-3.13.16",
  "summary": "Python 3.13 3.13.16, released September 30, 2026, fixes 7 CVEs in Python 3.13. None of them is reported as exploited. Patch Radar priority: Urgent. The latest Python 3.13 is 3.13.17, which also fixes every one of these CVEs.",
  "platform": "windows-app",
  "type": "app-version",
  "title": "Python 3.13 3.13.16",
  "released": "2026-09-30T00:00:00Z",
  "priority": "Urgent",
  "priorityTier": 2,
  "priorityReason": "Closes CVE-2026-19445, rated Critical",
  "supported": true,
  "cveCount": 7,
  "exploitedCveCount": 0,
  "kevCveCount": 0,
  "ransomwareCveCount": 0,
  "maxEpss": 0.00734,
  "maxCvss": 9.2,
  "appliesTo": [
    {
      "product": "Python 3.13",
      "productUrl": "https://patchblox.com/security/product/windows-app/python-3.13",
      "fixedVersion": "3.13.16",
      "latestVersion": "3.13.17",
      "supported": true
    }
  ],
  "supersededBy": {
    "product": "Python 3.13",
    "latestVersion": "3.13.17",
    "productUrl": "https://patchblox.com/security/product/windows-app/python-3.13"
  },
  "cves": [
    {
      "cveId": "CVE-2026-19445",
      "url": "https://patchblox.com/security/cve/CVE-2026-19445",
      "title": "Use-after-free of a server-side SSLContext when sni_callback switches contexts",
      "priority": "Urgent",
      "severity": "Critical",
      "cvss": 9.2,
      "epss": 0.00524,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-19553",
      "url": "https://patchblox.com/security/cve/CVE-2026-19553",
      "title": "SSLContext.wrap_bio() missing validation of server_hostname parameter",
      "priority": "High",
      "severity": "Important",
      "cvss": 8.1,
      "epss": 0.00547,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-82049",
      "url": "https://patchblox.com/security/cve/CVE-2026-82049",
      "title": "tarfile extraction filters allow file modification and content disclosure via hard link to symlink",
      "priority": "High",
      "severity": "Moderate",
      "cvss": 8.4,
      "epss": 0.00188,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-17084",
      "url": "https://patchblox.com/security/cve/CVE-2026-17084",
      "title": "stringprep.map_table_b2() deviates from RFC 3454 Table B.2",
      "priority": "Routine",
      "severity": "Moderate",
      "cvss": 6,
      "epss": 0.00734,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-87910",
      "url": "https://patchblox.com/security/cve/CVE-2026-87910",
      "title": "tarfile hardlink fallback ignores custom extraction filter rejection via None",
      "priority": "Routine",
      "severity": "Moderate",
      "cvss": 5.7,
      "epss": 0.00609,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-15806",
      "url": "https://patchblox.com/security/cve/CVE-2026-15806",
      "title": "\u0060HTTPPasswordMgr\u0060 can send saved HTTPS credentials via HTTP because of incorrect scheme matching",
      "priority": "Routine",
      "severity": "Moderate",
      "cvss": 6,
      "epss": 0.00528,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-15310",
      "url": "https://patchblox.com/security/cve/CVE-2026-15310",
      "title": "zipfile: bzip2/LZMA/Zstandard members decompress without a max_length bound, defeating chunked-read memory limits",
      "priority": "Routine",
      "severity": "Low",
      "cvss": 2.1,
      "epss": 0.00526,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    }
  ],
  "dataAsOf": "2026-11-07T12:40:37Z"
}