{
  "cveId": "CVE-2018-12396",
  "url": "https://patchblox.com/security/cve/CVE-2018-12396",
  "summary": "CVE-2018-12396 is fixed in 4 products on 1 platform, first by firefox 63.0\u002Bbuild2-0ubuntu0.18.04.2, released October 23, 2018. It is not reported as exploited. Patch Radar priority: Routine.",
  "title": "firefox-testsuite: A vulnerability where a WebExtension can run content scripts in disallowed contexts following navigation or other events",
  "description": "A vulnerability where a WebExtension can run content scripts in disallowed contexts following navigation or other events. This allows for potential privilege escalation by the WebExtension on sites where content scripts should not be run. This vulnerability affects Firefox ESR \u0026lt; 60.3 and Firefox \u0026lt; 63.",
  "published": "2018-10-23T17:00:00Z",
  "severity": "Medium",
  "epss": 0.02273,
  "epssPercentile": 0.8318,
  "priority": "Routine",
  "priorityTier": 4,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "firefox",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "63.0\u002Bbuild2-0ubuntu0.18.04.2",
      "fix": "firefox 63.0\u002Bbuild2-0ubuntu0.18.04.2",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-firefox-63.0-build2-0ubuntu0.18.04.2",
      "released": "2018-10-23T17:00:00Z"
    },
    {
      "platform": "linux",
      "product": "firefox-globalmenu",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "63.0\u002Bbuild2-0ubuntu0.18.04.2",
      "fix": "firefox-globalmenu 63.0\u002Bbuild2-0ubuntu0.18.04.2",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-firefox-globalmenu-63.0-build2-0ubuntu0.18.04.2",
      "released": "2018-10-23T17:00:00Z"
    },
    {
      "platform": "linux",
      "product": "firefox-mozsymbols",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "63.0\u002Bbuild2-0ubuntu0.18.04.2",
      "fix": "firefox-mozsymbols 63.0\u002Bbuild2-0ubuntu0.18.04.2",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-firefox-mozsymbols-63.0-build2-0ubuntu0.18.04.2",
      "released": "2018-10-23T17:00:00Z"
    },
    {
      "platform": "linux",
      "product": "firefox-testsuite",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "63.0\u002Bbuild2-0ubuntu0.18.04.2",
      "fix": "firefox-testsuite 63.0\u002Bbuild2-0ubuntu0.18.04.2",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-firefox-testsuite-63.0-build2-0ubuntu0.18.04.2",
      "released": "2018-10-23T17:00:00Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-07T18:46:35Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}