{
  "fix": "Mozilla Firefox (en-US) 101.0",
  "url": "https://patchblox.com/security/fix/windows-app/mozilla.firefox-101.0",
  "summary": "Mozilla Firefox (en-US) 101.0, released May 31, 2022, fixes 12 CVEs in Mozilla Firefox (en-US). None of them is reported as exploited. Patch Radar priority: High. The latest Mozilla Firefox (en-US) is 159.0, which also fixes every one of these CVEs.",
  "platform": "windows-app",
  "type": "app-version",
  "title": "Mozilla Firefox (en-US) 101.0",
  "released": "2022-05-31T00:00:00Z",
  "priority": "High",
  "priorityTier": 3,
  "priorityReason": "Closes CVE-2022-31736, high severity",
  "supported": true,
  "cveCount": 12,
  "exploitedCveCount": 0,
  "kevCveCount": 0,
  "ransomwareCveCount": 0,
  "maxEpss": 0.01106,
  "maxCvss": 9.8,
  "appliesTo": [
    {
      "product": "Mozilla Firefox (en-US)",
      "productUrl": "https://patchblox.com/security/product/windows-app/mozilla-firefox-en-us",
      "fixedVersion": "101.0",
      "latestVersion": "159.0",
      "supported": true
    }
  ],
  "supersededBy": {
    "product": "Mozilla Firefox (en-US)",
    "latestVersion": "159.0",
    "productUrl": "https://patchblox.com/security/product/windows-app/mozilla-firefox-en-us"
  },
  "cves": [
    {
      "cveId": "CVE-2022-31736",
      "url": "https://patchblox.com/security/cve/CVE-2022-31736",
      "title": "Mozilla Thunderbird and 4 others: Permissive Cross-domain Policy with Untrusted Domains",
      "priority": "High",
      "severity": "Medium",
      "cvss": 9.8,
      "epss": 0.01106,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2022-31747",
      "url": "https://patchblox.com/security/cve/CVE-2022-31747",
      "title": "Mozilla Thunderbird and 4 others: Improper Restriction of Operations within the Bounds of a Memory Buffer",
      "priority": "High",
      "severity": "Medium",
      "cvss": 9.8,
      "epss": 0.00936,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2022-31737",
      "url": "https://patchblox.com/security/cve/CVE-2022-31737",
      "title": "Mozilla Thunderbird and 4 others: Out-of-bounds Write",
      "priority": "High",
      "severity": "Medium",
      "cvss": 9.8,
      "epss": 0.00868,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2022-31741",
      "url": "https://patchblox.com/security/cve/CVE-2022-31741",
      "title": "Mozilla Thunderbird and 4 others: Use of Uninitialized Resource",
      "priority": "High",
      "severity": "Medium",
      "cvss": 9.8,
      "epss": 0.00705,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2022-31739",
      "url": "https://patchblox.com/security/cve/CVE-2022-31739",
      "title": "Mozilla Thunderbird and 4 others: External Control of File Name or Path",
      "priority": "High",
      "cvss": 8.8,
      "epss": 0.00705,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2022-31748",
      "url": "https://patchblox.com/security/cve/CVE-2022-31748",
      "title": "Mozilla Firefox ESR and 2 others: Improper Restriction of Operations within the Bounds of a Memory Buffer",
      "priority": "High",
      "severity": "Medium",
      "cvss": 9.8,
      "epss": 0.00699,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2022-31740",
      "url": "https://patchblox.com/security/cve/CVE-2022-31740",
      "title": "Mozilla Thunderbird and 4 others: Improper Restriction of Operations within the Bounds of a Memory Buffer",
      "priority": "High",
      "severity": "Medium",
      "cvss": 9.8,
      "epss": 0.00694,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2022-31742",
      "url": "https://patchblox.com/security/cve/CVE-2022-31742",
      "title": "Mozilla Thunderbird and 4 others: Observable Discrepancy",
      "priority": "High",
      "severity": "Medium",
      "cvss": 9.8,
      "epss": 0.00634,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2022-31738",
      "url": "https://patchblox.com/security/cve/CVE-2022-31738",
      "title": "Mozilla Thunderbird and 4 others: Authentication Bypass by Spoofing",
      "priority": "High",
      "severity": "Medium",
      "cvss": 9.8,
      "epss": 0.00623,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2022-31744",
      "url": "https://patchblox.com/security/cve/CVE-2022-31744",
      "title": "Mozilla Thunderbird and 4 others: Improper Neutralization of Input During Web Page Generation (\u0027Cross-site Scripting\u0027)",
      "priority": "High",
      "severity": "Medium",
      "cvss": 9.8,
      "epss": 0.00619,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2022-31743",
      "url": "https://patchblox.com/security/cve/CVE-2022-31743",
      "title": "Mozilla Firefox ESR and 2 others: Improper Neutralization of Input During Web Page Generation (\u0027Cross-site Scripting\u0027)",
      "priority": "Routine",
      "severity": "Medium",
      "cvss": 6.5,
      "epss": 0.0046,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2022-31745",
      "url": "https://patchblox.com/security/cve/CVE-2022-31745",
      "title": "Mozilla Firefox ESR and 2 others: Improper Validation of Array Index",
      "priority": "Routine",
      "severity": "Medium",
      "cvss": 4.3,
      "epss": 0.00369,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    }
  ],
  "dataAsOf": "2026-11-08T06:59:42Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}