{
  "fix": "Mozilla Firefox (en-US) 119.0",
  "url": "https://patchblox.com/security/fix/windows-app/mozilla.firefox-119.0",
  "summary": "Mozilla Firefox (en-US) 119.0, released October 24, 2023, fixes 10 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) 119.0",
  "released": "2023-10-24T00:00:00Z",
  "priority": "High",
  "priorityTier": 3,
  "priorityReason": "Closes CVE-2023-5730, high severity",
  "supported": true,
  "cveCount": 10,
  "exploitedCveCount": 0,
  "kevCveCount": 0,
  "ransomwareCveCount": 0,
  "maxEpss": 0.01541,
  "maxCvss": 9.8,
  "appliesTo": [
    {
      "product": "Mozilla Firefox (en-US)",
      "productUrl": "https://patchblox.com/security/product/windows-app/mozilla-firefox-en-us",
      "fixedVersion": "119.0",
      "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-2023-5730",
      "url": "https://patchblox.com/security/cve/CVE-2023-5730",
      "title": "Mozilla Firefox ESR and 5 others: Memory safety bugs present in Firefox 118, Firefox ESR 115.3, and Thunderbird 115.3.",
      "priority": "High",
      "severity": "Important",
      "cvss": 9.8,
      "epss": 0.01541,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2023-5724",
      "url": "https://patchblox.com/security/cve/CVE-2023-5724",
      "title": "Mozilla Firefox ESR and 5 others: Uncontrolled Resource Consumption",
      "priority": "High",
      "severity": "Important",
      "cvss": 7.5,
      "epss": 0.01521,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2023-5728",
      "url": "https://patchblox.com/security/cve/CVE-2023-5728",
      "title": "Mozilla Firefox ESR and 5 others: Use After Free",
      "priority": "High",
      "severity": "Important",
      "cvss": 7.5,
      "epss": 0.01321,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2023-5731",
      "url": "https://patchblox.com/security/cve/CVE-2023-5731",
      "title": "Mozilla Firefox ESR and 3 others: Memory safety bugs present in Firefox 118.",
      "priority": "High",
      "severity": "Medium",
      "cvss": 9.8,
      "epss": 0.01145,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2023-5721",
      "url": "https://patchblox.com/security/cve/CVE-2023-5721",
      "title": "Mozilla Firefox ESR and 5 others: It was possible for certain browser prompts and dialogs to be activated or dismissed unintentionally\u2026",
      "priority": "High",
      "severity": "Important",
      "cvss": 7.5,
      "epss": 0.00807,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2023-5725",
      "url": "https://patchblox.com/security/cve/CVE-2023-5725",
      "title": "Mozilla Firefox ESR and 5 others: A malicious installed WebExtension could open arbitrary URLs, which under the right circumstance could\u2026",
      "priority": "Routine",
      "severity": "Important",
      "cvss": 6.1,
      "epss": 0.00935,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2023-5727",
      "url": "https://patchblox.com/security/cve/CVE-2023-5727",
      "title": "Mozilla Firefox ESR and 5 others: The executable file warning was not presented when downloading .msix, .msixbundle, .appx, and .appxbundle\u2026",
      "priority": "Routine",
      "severity": "Medium",
      "cvss": 6.5,
      "epss": 0.00829,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2023-5723",
      "url": "https://patchblox.com/security/cve/CVE-2023-5723",
      "title": "Mozilla Firefox ESR and 3 others: An attacker with temporary script access to a site could have set a cookie containing invalid characters\u2026",
      "priority": "Routine",
      "severity": "Medium",
      "cvss": 5.3,
      "epss": 0.00699,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2023-5729",
      "url": "https://patchblox.com/security/cve/CVE-2023-5729",
      "title": "Mozilla Firefox ESR and 3 others: A malicious web site can enter fullscreen mode while simultaneously triggering a WebAuthn prompt.",
      "priority": "Routine",
      "severity": "Medium",
      "cvss": 4.3,
      "epss": 0.00698,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2023-5722",
      "url": "https://patchblox.com/security/cve/CVE-2023-5722",
      "title": "Mozilla Firefox ESR and 3 others: Using iterative requests an attacker was able to learn the size of an opaque response, as well as the\u2026",
      "priority": "Routine",
      "severity": "Medium",
      "cvss": 5.3,
      "epss": 0.00645,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    }
  ],
  "dataAsOf": "2026-11-09T07:25:28Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}