{
  "cveId": "CVE-2020-6813",
  "url": "https://patchblox.com/security/cve/CVE-2020-6813",
  "summary": "CVE-2020-6813 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: When protecting CSS blocks with the nonce feature of Content Security Policy, the @import statement in\u2026",
  "description": "When protecting CSS blocks with the nonce feature of Content Security Policy, the @import statement in the CSS block could allow an attacker to inject arbitrary styles, bypassing the intent of the Content Security Policy. This vulnerability affects Firefox \u003C 74.",
  "published": "2020-03-10T17:00:00Z",
  "severity": "Low",
  "cvss": 5.3,
  "epss": 0.01219,
  "epssPercentile": 0.68837,
  "priority": "Routine",
  "priorityTier": 4,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "vendorAdvisory": "https://nvd.nist.gov/vuln/detail/CVE-2020-6813",
  "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": "2026-11-08T00:53:09Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}