{
  "fix": "firefox 83.0\u002Bbuild2-0ubuntu0.18.04.2",
  "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-firefox-83.0-build2-0ubuntu0.18.04.2",
  "summary": "firefox 83.0\u002Bbuild2-0ubuntu0.18.04.2, released November 16, 2020, fixes 15 CVEs in firefox. None of them is reported as exploited. Patch Radar priority: High. The product is no longer supported.",
  "platform": "linux",
  "type": "package",
  "title": "firefox 83.0\u002Bbuild2-0ubuntu0.18.04.2 for Ubuntu 18.04.6 LTS (bionic)",
  "released": "2020-11-16T16:00:00Z",
  "priority": "High",
  "priorityTier": 3,
  "priorityReason": "Closes CVE-2020-26960, high severity",
  "supported": false,
  "cveCount": 15,
  "exploitedCveCount": 0,
  "kevCveCount": 0,
  "ransomwareCveCount": 0,
  "maxEpss": 0.02571,
  "maxCvss": 8.8,
  "appliesTo": [
    {
      "product": "firefox",
      "productUrl": "https://patchblox.com/security/product/linux/firefox",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "83.0\u002Bbuild2-0ubuntu0.18.04.2",
      "supported": true
    }
  ],
  "cves": [
    {
      "cveId": "CVE-2020-26960",
      "url": "https://patchblox.com/security/cve/CVE-2020-26960",
      "title": "Firefox ESR and 2 others: If the Compact() method was called on an nsTArray, the array could have been reallocated without updating\u2026",
      "priority": "High",
      "severity": "IMPORTANT",
      "cvss": 8.8,
      "epss": 0.01563,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2020-26968",
      "url": "https://patchblox.com/security/cve/CVE-2020-26968",
      "title": "Firefox ESR and 2 others: Mozilla developers reported memory safety bugs present in Firefox 82 and Firefox ESR 78.4.",
      "priority": "High",
      "severity": "IMPORTANT",
      "cvss": 8.8,
      "epss": 0.01514,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2020-26959",
      "url": "https://patchblox.com/security/cve/CVE-2020-26959",
      "title": "Firefox ESR and 2 others: During browser shutdown, reference decrementing could have occured on a previously freed object, resulting\u2026",
      "priority": "High",
      "severity": "IMPORTANT",
      "cvss": 8.8,
      "epss": 0.01297,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2020-26969",
      "url": "https://patchblox.com/security/cve/CVE-2020-26969",
      "title": "Firefox ESR and 1 other: Mozilla developers reported memory safety bugs present in Firefox 82.",
      "priority": "High",
      "severity": "Medium",
      "cvss": 8.8,
      "epss": 0.01215,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2020-26952",
      "url": "https://patchblox.com/security/cve/CVE-2020-26952",
      "title": "Firefox ESR and 1 other: Incorrect bookkeeping of functions inlined during JIT compilation could have led to memory corruption\u2026",
      "priority": "High",
      "severity": "Medium",
      "cvss": 8.8,
      "epss": 0.01163,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2020-16012",
      "url": "https://patchblox.com/security/cve/CVE-2020-16012",
      "title": "Firefox ESR and 1 other: Side-channel information leakage in graphics in Google Chrome prior to 87.0.4280.66 allowed a remote\u2026",
      "priority": "Routine",
      "severity": "IMPORTANT",
      "cvss": 4.3,
      "epss": 0.02571,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2020-26958",
      "url": "https://patchblox.com/security/cve/CVE-2020-26958",
      "title": "Firefox ESR and 2 others: Firefox did not block execution of scripts with incorrect MIME types when the response was intercepted\u2026",
      "priority": "Routine",
      "severity": "IMPORTANT",
      "cvss": 6.1,
      "epss": 0.01364,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2020-26953",
      "url": "https://patchblox.com/security/cve/CVE-2020-26953",
      "title": "Firefox ESR and 2 others: It was possible to cause the browser to enter fullscreen mode without displaying the security UI; thus\u2026",
      "priority": "Routine",
      "severity": "IMPORTANT",
      "cvss": 4.3,
      "epss": 0.01293,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2020-26965",
      "url": "https://patchblox.com/security/cve/CVE-2020-26965",
      "title": "Firefox ESR and 2 others: Some websites have a feature \u0022Show Password\u0022 where clicking a button will change a password field into\u2026",
      "priority": "Routine",
      "severity": "IMPORTANT",
      "cvss": 6.5,
      "epss": 0.01262,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2020-26956",
      "url": "https://patchblox.com/security/cve/CVE-2020-26956",
      "title": "Firefox ESR and 2 others: In some cases, removing HTML elements during sanitization would keep existing SVG event handlers and\u2026",
      "priority": "Routine",
      "severity": "IMPORTANT",
      "cvss": 6.1,
      "epss": 0.01233,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2020-26961",
      "url": "https://patchblox.com/security/cve/CVE-2020-26961",
      "title": "Firefox ESR and 2 others: When DNS over HTTPS is in use, it intentionally filters RFC1918 and related IP ranges from the responses\u2026",
      "priority": "Routine",
      "severity": "IMPORTANT",
      "cvss": 6.5,
      "epss": 0.01165,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2020-26951",
      "url": "https://patchblox.com/security/cve/CVE-2020-26951",
      "title": "Firefox ESR and 2 others: A parsing and event loading mismatch in Firefox\u0027s SVG code could have allowed load events to fire, even\u2026",
      "priority": "Routine",
      "severity": "IMPORTANT",
      "cvss": 6.1,
      "epss": 0.01051,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2020-26967",
      "url": "https://patchblox.com/security/cve/CVE-2020-26967",
      "title": "Firefox ESR and 1 other: When listening for page changes with a Mutation Observer, a malicious web page could confuse Firefox\u2026",
      "priority": "Routine",
      "severity": "Low",
      "cvss": 6.5,
      "epss": 0.0085,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2020-26963",
      "url": "https://patchblox.com/security/cve/CVE-2020-26963",
      "title": "Firefox ESR and 1 other: Repeated calls to the history and location interfaces could have been used to hang the browser.",
      "priority": "Routine",
      "severity": "Low",
      "cvss": 4.3,
      "epss": 0.00846,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2020-26962",
      "url": "https://patchblox.com/security/cve/CVE-2020-26962",
      "title": "Firefox ESR and 1 other: Cross-origin iframes that contained a login form could have been recognized by the login autofill service,\u2026",
      "priority": "Routine",
      "severity": "Low",
      "cvss": 6.1,
      "epss": 0.00698,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    }
  ],
  "dataAsOf": "2026-11-12T01:51:14Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}