{
  "cveId": "CVE-2018-5131",
  "url": "https://patchblox.com/security/cve/CVE-2018-5131",
  "summary": "CVE-2018-5131 is fixed in 4 products on 1 platform, first by firefox 59.0.1\u002Bbuild1-0ubuntu1, released June 11, 2018. It is not reported as exploited. Patch Radar priority: Routine.",
  "title": "firefox: Under certain circumstances the \u0022fetch()\u0022 API can return transient local copies of resources that were sent with a \u0022n...",
  "description": "Under certain circumstances the \u0022fetch()\u0022 API can return transient local copies of resources that were sent with a \u0022no-store\u0022 or \u0022no-cache\u0022 cache header instead of downloading a copy from the network as it should. This can result in previously stored, locally cached data of a website being accessible to users if they share a common profile while browsing. This vulnerability affects Firefox ESR \u0026lt; 52.7 and Firefox \u0026lt; 59.",
  "published": "2018-03-13T17:00:00Z",
  "severity": "Low",
  "epss": 0.02247,
  "epssPercentile": 0.82957,
  "priority": "Routine",
  "priorityTier": 4,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "firefox",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "59.0.1\u002Bbuild1-0ubuntu1",
      "fix": "firefox 59.0.1\u002Bbuild1-0ubuntu1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-firefox-59.0.1-build1-0ubuntu1",
      "released": "2018-06-11T14:29:00Z"
    },
    {
      "platform": "linux",
      "product": "firefox-globalmenu",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "59.0.1\u002Bbuild1-0ubuntu1",
      "fix": "firefox-globalmenu 59.0.1\u002Bbuild1-0ubuntu1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-firefox-globalmenu-59.0.1-build1-0ubuntu1",
      "released": "2018-06-11T14:29:00Z"
    },
    {
      "platform": "linux",
      "product": "firefox-mozsymbols",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "59.0.1\u002Bbuild1-0ubuntu1",
      "fix": "firefox-mozsymbols 59.0.1\u002Bbuild1-0ubuntu1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-firefox-mozsymbols-59.0.1-build1-0ubuntu1",
      "released": "2018-06-11T14:29:00Z"
    },
    {
      "platform": "linux",
      "product": "firefox-testsuite",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "59.0.1\u002Bbuild1-0ubuntu1",
      "fix": "firefox-testsuite 59.0.1\u002Bbuild1-0ubuntu1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-firefox-testsuite-59.0.1-build1-0ubuntu1",
      "released": "2018-06-11T14:29:00Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-07T12:40:37Z"
}