{
  "fix": "Mozilla Thunderbird (en-US) 91.9.0",
  "url": "https://patchblox.com/security/fix/windows-app/mozilla.thunderbird-91.9.0",
  "summary": "Mozilla Thunderbird (en-US) 91.9.0, released May 2, 2022, fixes 8 CVEs in Mozilla Thunderbird (en-US). None of them is reported as exploited. Patch Radar priority: High. The latest Mozilla Thunderbird (en-US) is 159.0, which also fixes every one of these CVEs.",
  "platform": "windows-app",
  "type": "app-version",
  "title": "Mozilla Thunderbird (en-US) 91.9.0",
  "released": "2022-05-02T00:00:00Z",
  "priority": "High",
  "priorityTier": 3,
  "priorityReason": "Closes CVE-2022-29917, high severity",
  "supported": true,
  "cveCount": 8,
  "exploitedCveCount": 0,
  "kevCveCount": 0,
  "ransomwareCveCount": 0,
  "maxEpss": 0.01054,
  "maxCvss": 9.8,
  "appliesTo": [
    {
      "product": "Mozilla Thunderbird (en-US)",
      "productUrl": "https://patchblox.com/security/product/windows-app/mozilla-thunderbird-en-us",
      "fixedVersion": "91.9.0",
      "latestVersion": "159.0",
      "supported": true
    }
  ],
  "supersededBy": {
    "product": "Mozilla Thunderbird (en-US)",
    "latestVersion": "159.0",
    "productUrl": "https://patchblox.com/security/product/windows-app/mozilla-thunderbird-en-us"
  },
  "cves": [
    {
      "cveId": "CVE-2022-29917",
      "url": "https://patchblox.com/security/cve/CVE-2022-29917",
      "title": "Mozilla Thunderbird and 4 others: Out-of-bounds Write",
      "priority": "High",
      "severity": "Medium",
      "cvss": 9.8,
      "epss": 0.01054,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2022-29909",
      "url": "https://patchblox.com/security/cve/CVE-2022-29909",
      "title": "Mozilla Thunderbird and 4 others: Incorrect Default Permissions",
      "priority": "High",
      "severity": "Important",
      "cvss": 9.8,
      "epss": 0.00889,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2022-29916",
      "url": "https://patchblox.com/security/cve/CVE-2022-29916",
      "title": "Mozilla Thunderbird and 4 others: Exposure of Sensitive Information to an Unauthorized Actor",
      "priority": "High",
      "severity": "Important",
      "cvss": 9.8,
      "epss": 0.00758,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2022-29912",
      "url": "https://patchblox.com/security/cve/CVE-2022-29912",
      "title": "Mozilla Thunderbird and 4 others: URL Redirection to Untrusted Site (\u0027Open Redirect\u0027)",
      "priority": "High",
      "severity": "Medium",
      "cvss": 9.8,
      "epss": 0.00675,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2022-29914",
      "url": "https://patchblox.com/security/cve/CVE-2022-29914",
      "title": "Mozilla Thunderbird and 4 others: Improper Restriction of Rendered UI Layers or Frames",
      "priority": "High",
      "severity": "Important",
      "cvss": 9.8,
      "epss": 0.00661,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2022-29911",
      "url": "https://patchblox.com/security/cve/CVE-2022-29911",
      "title": "Mozilla Thunderbird and 4 others: Improper Restriction of Rendered UI Layers or Frames",
      "priority": "High",
      "severity": "Important",
      "cvss": 9.8,
      "epss": 0.00613,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2022-29913",
      "url": "https://patchblox.com/security/cve/CVE-2022-29913",
      "title": "Mozilla Thunderbird and 1 other: Improper Authorization",
      "priority": "High",
      "severity": "Important",
      "cvss": 9.8,
      "epss": 0.00456,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2022-1520",
      "url": "https://patchblox.com/security/cve/CVE-2022-1520",
      "title": "Mozilla Thunderbird and 1 other: Origin Validation Error",
      "priority": "High",
      "severity": "Important",
      "cvss": 9.8,
      "epss": 0.00278,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    }
  ],
  "dataAsOf": "2026-11-10T07:50:38Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}