{
  "fix": "RHSA-2023:5201",
  "url": "https://patchblox.com/security/fix/linux/rhsa-2023-5201",
  "summary": "RHSA-2023:5201, released September 18, 2023, fixes 2 CVEs in thunderbird (version 0:102.15.1-1.el8_8). One of them is being exploited (CVE-2023-4863); 1 on CISA KEV. Patch Radar priority: Patch now.",
  "platform": "linux",
  "type": "advisory",
  "title": "thunderbird security update",
  "released": "2023-09-18T00:00:00Z",
  "priority": "Patch now",
  "priorityTier": 1,
  "priorityReason": "Closes CVE-2023-4863, exploited (CISA KEV)",
  "supported": true,
  "cveCount": 2,
  "exploitedCveCount": 1,
  "kevCveCount": 1,
  "ransomwareCveCount": 0,
  "maxEpss": 0.99979,
  "maxCvss": 9.6,
  "vendorAdvisory": "https://access.redhat.com/errata/RHSA-2023:5201",
  "appliesTo": [
    {
      "product": "thunderbird",
      "productUrl": "https://patchblox.com/security/product/linux/thunderbird",
      "release": "RHEL 8",
      "fixedVersion": "0:102.15.1-1.el8_8",
      "supported": true
    }
  ],
  "cves": [
    {
      "cveId": "CVE-2023-4863",
      "url": "https://patchblox.com/security/cve/CVE-2023-4863",
      "title": "Chromium: CVE-2023-4863 Heap buffer overflow in WebP",
      "priority": "Patch now",
      "severity": "high",
      "cvss": 9.6,
      "epss": 0.99979,
      "kev": true,
      "ransomware": false,
      "exploited": true,
      "disclosed": true
    },
    {
      "cveId": "CVE-2023-5129",
      "url": "https://patchblox.com/security/cve/CVE-2023-5129",
      "title": "firefox: Mozilla Firefox is an open-source web browser, designed for standards compliance, performance, and portability.\n\nThis...",
      "priority": "High",
      "severity": "Important",
      "cvss": 9.6,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    }
  ],
  "dataAsOf": "2026-11-07T06:34:28Z"
}