{
  "fix": "firefox 84.0\u002Bbuild3-0ubuntu0.18.04.1",
  "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-firefox-84.0-build3-0ubuntu0.18.04.1",
  "summary": "firefox 84.0\u002Bbuild3-0ubuntu0.18.04.1, released December 14, 2020, fixes 11 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 84.0\u002Bbuild3-0ubuntu0.18.04.1 for Ubuntu 18.04.6 LTS (bionic)",
  "released": "2020-12-14T16:00:00Z",
  "priority": "High",
  "priorityTier": 3,
  "priorityReason": "Closes CVE-2020-26971, high severity",
  "supported": false,
  "cveCount": 11,
  "exploitedCveCount": 0,
  "kevCveCount": 0,
  "ransomwareCveCount": 0,
  "maxEpss": 0.01899,
  "maxCvss": 9.8,
  "appliesTo": [
    {
      "product": "firefox",
      "productUrl": "https://patchblox.com/security/product/linux/firefox",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "84.0\u002Bbuild3-0ubuntu0.18.04.1",
      "supported": true
    }
  ],
  "cves": [
    {
      "cveId": "CVE-2020-26971",
      "url": "https://patchblox.com/security/cve/CVE-2020-26971",
      "title": "Firefox ESR and 2 others: Certain blit values provided by the user were not properly constrained leading to a heap buffer overflow\u2026",
      "priority": "High",
      "severity": "IMPORTANT",
      "cvss": 8.8,
      "epss": 0.01899,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2020-26973",
      "url": "https://patchblox.com/security/cve/CVE-2020-26973",
      "title": "Firefox ESR and 2 others: Certain input to the CSS Sanitizer confused it, resulting in incorrect components being removed.",
      "priority": "High",
      "severity": "IMPORTANT",
      "cvss": 8.8,
      "epss": 0.01623,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2020-35113",
      "url": "https://patchblox.com/security/cve/CVE-2020-35113",
      "title": "Firefox ESR and 2 others: Mozilla developers reported memory safety bugs present in Firefox 83 and Firefox ESR 78.5.",
      "priority": "High",
      "severity": "IMPORTANT",
      "cvss": 8.8,
      "epss": 0.01572,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2020-26974",
      "url": "https://patchblox.com/security/cve/CVE-2020-26974",
      "title": "Firefox ESR and 2 others: When flex-basis was used on a table wrapper, a StyleGenericFlexBasis object could have been incorrectly\u2026",
      "priority": "High",
      "severity": "IMPORTANT",
      "cvss": 8.8,
      "epss": 0.01533,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2020-26972",
      "url": "https://patchblox.com/security/cve/CVE-2020-26972",
      "title": "Firefox ESR and 1 other: The lifecycle of IPC Actors allows managed actors to outlive their manager actors; and the former must\u2026",
      "priority": "High",
      "severity": "Medium",
      "cvss": 9.8,
      "epss": 0.0131,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2020-35114",
      "url": "https://patchblox.com/security/cve/CVE-2020-35114",
      "title": "Firefox ESR and 1 other: Mozilla developers reported memory safety bugs present in Firefox 83.",
      "priority": "High",
      "severity": "Medium",
      "cvss": 8.8,
      "epss": 0.01049,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2020-26976",
      "url": "https://patchblox.com/security/cve/CVE-2020-26976",
      "title": "Firefox ESR and 1 other: When a HTTPS pages was embedded in a HTTP page, and there was a service worker registered for the former,\u2026",
      "priority": "Routine",
      "severity": "IMPORTANT",
      "cvss": 6.5,
      "epss": 0.01639,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2020-35111",
      "url": "https://patchblox.com/security/cve/CVE-2020-35111",
      "title": "Firefox ESR and 2 others: When an extension with the proxy permission registered to receive \u003Call_urls\u003E, the proxy.onRequest callback\u2026",
      "priority": "Routine",
      "severity": "IMPORTANT",
      "cvss": 4.3,
      "epss": 0.01432,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2020-26978",
      "url": "https://patchblox.com/security/cve/CVE-2020-26978",
      "title": "Firefox ESR and 2 others: Using techniques that built on the slipstream research, a malicious webpage could have exposed both an\u2026",
      "priority": "Routine",
      "severity": "IMPORTANT",
      "cvss": 6.1,
      "epss": 0.01334,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2020-16042",
      "url": "https://patchblox.com/security/cve/CVE-2020-16042",
      "title": "firefox: ELSA-2020-5562-1: firefox security update (IMPORTANT)",
      "priority": "Routine",
      "severity": "IMPORTANT",
      "cvss": 6.5,
      "epss": 0.01111,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2020-26979",
      "url": "https://patchblox.com/security/cve/CVE-2020-26979",
      "title": "Firefox ESR and 1 other: When a user typed a URL in the address bar or the search bar and quickly hit the enter key, a website\u2026",
      "priority": "Routine",
      "severity": "Low",
      "cvss": 6.1,
      "epss": 0.00726,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    }
  ],
  "dataAsOf": "2026-11-12T07:53:35Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}