{"id":"CVE-2020-8420","aliases":["BIT-joomla-2020-8420","EUVD-2020-29287","GHSA-552h-fxg2-jp9c"],"status":"published","title":"An issue was discovered in Joomla! before 3.9.15. A missing CSRF token check in the LESS compiler...","description":"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.","severity":{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-09","score":0.00736,"percentile":0.54748,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-352"],"published":"2020-01-28T20:58:24Z","modified":"2026-10-24T10:30:39Z","fixes":[{"ecosystem":"Bitnami","package":"joomla","fixed_in":["3.9.15"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Bitnami","package":"joomla","ranges":[{"type":"SEMVER","events":[{"introduced":"3.0.0"},{"fixed":"3.9.15"}]}]}],"products":[{"vendor":"joomla","product":"joomla\\!"}],"references":[{"url":"https://developer.joomla.org/security-centre/799-20200102-core-csrf-com-templates-less-compiler","tags":["x_refsource_MISC","x_transferred","Vendor Advisory","advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2020-8420","tags":["web"]},{"url":"https://github.com/advisories/GHSA-552h-fxg2-jp9c"}],"sources":{"cve":[{"id":"CVE-2020-8420","description":"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.","status":"published","published":"2020-01-28T20:58:24Z","modified":"2024-08-04T09:56:28.468Z","updated_at":"2026-11-02T14:35:50.88562Z"}],"euvd":[{"id":"EUVD-2020-29287","description":"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.","status":"published","published":"2020-01-28T20:58:24Z","modified":"2024-08-04T09:56:28Z","updated_at":"2026-11-03T03:07:57.599144Z"}],"ghsa":[{"id":"GHSA-552h-fxg2-jp9c","title":"An issue was discovered in Joomla! before 3.9.15. A missing CSRF token check in the LESS compiler...","description":"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.","status":"published","published":"2022-05-24T17:07:38Z","modified":"2023-01-29T05:01:16Z","updated_at":"2026-11-02T14:44:46.468507Z"}],"nvd":[{"id":"CVE-2020-8420","description":"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.","status":"published","published":"2020-01-28T21:15:12.077Z","modified":"2026-06-17T03:26:21Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high","assessor":"primary"},{"version":"2.0","score":6.8,"vector":"AV:N/AC:M/Au:N/C:P/I:P/A:P","level":"medium","assessor":"primary"}],"cwes":["CWE-352"],"updated_at":"2026-11-02T14:05:53.837808Z"}],"osv":[{"id":"CVE-2020-8420","description":"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.","status":"published","published":"2020-01-28T21:15:12.077Z","modified":"2026-10-24T10:30:39.418637026Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-02T15:44:17.663289Z"},{"id":"BIT-joomla-2020-8420","description":"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.","status":"published","published":"2025-04-03T14:11:39.892Z","modified":"2026-09-08T08:48:01.498303472Z","updated_at":"2026-11-02T15:28:31.782692Z"}]}}