{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "versions": [
              {
                "introduced": "3.0.0"
              },
              {
                "fixed": "3.9.15"
              }
            ]
          },
          "events": [
            {
              "introduced": "c1acb7e6973bd549fe35a02659fe851ff1a37dfe"
            },
            {
              "fixed": "e5ba4486e48982c41022e59e3ba0a7bf413d6bf1"
            }
          ],
          "repo": "https://github.com/joomla/joomla-cms",
          "type": "GIT"
        }
      ]
    }
  ],
  "details": "An issue was discovered in Joomla! before 3.9.15. A missing CSRF token check in the LESS compiler of com_templates causes a CSRF vulnerability.",
  "id": "CVE-2020-8420",
  "modified": "2026-03-13T21:54:33.677151495Z",
  "published": "2020-01-28T21:15:12.077Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://developer.joomla.org/security-centre/799-20200102-core-csrf-com-templates-less-compiler"
    }
  ],
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}