{
  "cveId": "CVE-2020-15665",
  "url": "https://patchblox.com/security/cve/CVE-2020-15665",
  "summary": "CVE-2020-15665 is fixed in 4 products on 2 platforms, first by firefox 80.0\u002Bbuild2-0ubuntu0.18.04.1, released August 25, 2020. It is not reported as exploited. Patch Radar priority: Routine.",
  "title": "Firefox ESR and 1 other: Firefox did not reset the address bar after the beforeunload dialog was shown if the user chose to remain\u2026",
  "description": "Firefox did not reset the address bar after the beforeunload dialog was shown if the user chose to remain on the page. This could have resulted in an incorrect URL being shown when used in conjunction with other unexpected browser behaviors. This vulnerability affects Firefox \u003C 80.",
  "published": "2020-08-25T17:00:00Z",
  "severity": "Medium",
  "cvss": 4.3,
  "epss": 0.00686,
  "epssPercentile": 0.52877,
  "priority": "Routine",
  "priorityTier": 4,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "vendorAdvisory": "https://nvd.nist.gov/vuln/detail/CVE-2020-15665",
  "fixes": [
    {
      "platform": "windows-app",
      "product": "Mozilla Firefox ESR (en-US)",
      "fixedVersion": "91.0",
      "fix": "Mozilla Firefox ESR (en-US) 91.0",
      "url": "https://patchblox.com/security/fix/windows-app/mozilla.firefox.esr-91.0",
      "released": "2021-08-04T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "firefox",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "80.0\u002Bbuild2-0ubuntu0.18.04.1",
      "fix": "firefox 80.0\u002Bbuild2-0ubuntu0.18.04.1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-firefox-80.0-build2-0ubuntu0.18.04.1",
      "released": "2020-08-25T21:30:00Z"
    },
    {
      "platform": "linux",
      "product": "firefox",
      "release": "Ubuntu 20.04 LTS (focal)",
      "fixedVersion": "80.0\u002Bbuild2-0ubuntu0.20.04.1",
      "fix": "firefox 80.0\u002Bbuild2-0ubuntu0.20.04.1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-focal-firefox-80.0-build2-0ubuntu0.20.04.1",
      "released": "2020-08-25T21:30:00Z"
    },
    {
      "platform": "linux",
      "product": "firefox-geckodriver",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "80.0\u002Bbuild2-0ubuntu0.18.04.1",
      "fix": "firefox-geckodriver 80.0\u002Bbuild2-0ubuntu0.18.04.1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-firefox-geckodriver-80.0-build2-0ubuntu0.18.04.1",
      "released": "2020-08-25T21:30:00Z"
    },
    {
      "platform": "linux",
      "product": "firefox-geckodriver",
      "release": "Ubuntu 20.04 LTS (focal)",
      "fixedVersion": "80.0\u002Bbuild2-0ubuntu0.20.04.1",
      "fix": "firefox-geckodriver 80.0\u002Bbuild2-0ubuntu0.20.04.1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-focal-firefox-geckodriver-80.0-build2-0ubuntu0.20.04.1",
      "released": "2020-08-25T21:30:00Z"
    },
    {
      "platform": "linux",
      "product": "firefox-mozsymbols",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "80.0\u002Bbuild2-0ubuntu0.18.04.1",
      "fix": "firefox-mozsymbols 80.0\u002Bbuild2-0ubuntu0.18.04.1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-firefox-mozsymbols-80.0-build2-0ubuntu0.18.04.1",
      "released": "2020-08-25T21:30:00Z"
    },
    {
      "platform": "linux",
      "product": "firefox-mozsymbols",
      "release": "Ubuntu 20.04 LTS (focal)",
      "fixedVersion": "80.0\u002Bbuild2-0ubuntu0.20.04.1",
      "fix": "firefox-mozsymbols 80.0\u002Bbuild2-0ubuntu0.20.04.1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-focal-firefox-mozsymbols-80.0-build2-0ubuntu0.20.04.1",
      "released": "2020-08-25T21:30:00Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-08T00:53:09Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}