{
  "cveId": "CVE-2020-6810",
  "url": "https://patchblox.com/security/cve/CVE-2020-6810",
  "summary": "CVE-2020-6810 is fixed in 4 products on 2 platforms, first by firefox 74.0\u002Bbuild3-0ubuntu0.18.04.1, released March 10, 2020. It is not reported as exploited. Patch Radar priority: Routine.",
  "title": "Firefox ESR: After a website had entered fullscreen mode, it could have used a previously opened popup to obscure\u2026",
  "description": "After a website had entered fullscreen mode, it could have used a previously opened popup to obscure the notification that indicates the browser is in fullscreen mode. Combined with spoofing the browser chrome, this could have led to confusing the user about the current origin of the page and credential theft or other attacks. This vulnerability affects Firefox \u003C 74.",
  "published": "2020-03-10T17:00:00Z",
  "severity": "Medium",
  "cvss": 4.3,
  "epss": 0.01033,
  "epssPercentile": 0.63977,
  "priority": "Routine",
  "priorityTier": 4,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "vendorAdvisory": "https://nvd.nist.gov/vuln/detail/CVE-2020-6810",
  "fixes": [
    {
      "platform": "windows-app",
      "product": "Mozilla Firefox ESR (en-US)",
      "fixedVersion": "78.0esr",
      "fix": "Mozilla Firefox ESR (en-US) 78.0esr",
      "url": "https://patchblox.com/security/fix/windows-app/mozilla.firefox.esr-78.0esr",
      "released": "2020-06-25T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "firefox",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "74.0\u002Bbuild3-0ubuntu0.18.04.1",
      "fix": "firefox 74.0\u002Bbuild3-0ubuntu0.18.04.1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-firefox-74.0-build3-0ubuntu0.18.04.1",
      "released": "2020-03-10T17:00:00Z"
    },
    {
      "platform": "linux",
      "product": "firefox",
      "release": "Ubuntu 20.04 LTS (focal)",
      "fixedVersion": "74.0\u002Bbuild3-0ubuntu1",
      "fix": "firefox 74.0\u002Bbuild3-0ubuntu1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-focal-firefox-74.0-build3-0ubuntu1",
      "released": "2020-03-10T17:00:00Z"
    },
    {
      "platform": "linux",
      "product": "firefox-geckodriver",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "74.0\u002Bbuild3-0ubuntu0.18.04.1",
      "fix": "firefox-geckodriver 74.0\u002Bbuild3-0ubuntu0.18.04.1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-firefox-geckodriver-74.0-build3-0ubuntu0.18.04.1",
      "released": "2020-03-10T17:00:00Z"
    },
    {
      "platform": "linux",
      "product": "firefox-geckodriver",
      "release": "Ubuntu 20.04 LTS (focal)",
      "fixedVersion": "74.0\u002Bbuild3-0ubuntu1",
      "fix": "firefox-geckodriver 74.0\u002Bbuild3-0ubuntu1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-focal-firefox-geckodriver-74.0-build3-0ubuntu1",
      "released": "2020-03-10T17:00:00Z"
    },
    {
      "platform": "linux",
      "product": "firefox-mozsymbols",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "74.0\u002Bbuild3-0ubuntu0.18.04.1",
      "fix": "firefox-mozsymbols 74.0\u002Bbuild3-0ubuntu0.18.04.1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-firefox-mozsymbols-74.0-build3-0ubuntu0.18.04.1",
      "released": "2020-03-10T17:00:00Z"
    },
    {
      "platform": "linux",
      "product": "firefox-mozsymbols",
      "release": "Ubuntu 20.04 LTS (focal)",
      "fixedVersion": "74.0\u002Bbuild3-0ubuntu1",
      "fix": "firefox-mozsymbols 74.0\u002Bbuild3-0ubuntu1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-focal-firefox-mozsymbols-74.0-build3-0ubuntu1",
      "released": "2020-03-10T17:00:00Z"
    }
  ],
  "noFixYet": [],
  "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"
  }
}