{"id":"CVE-2020-8420","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.","aliases":["BIT-joomla-2020-8420"],"modified":"2026-05-30T16:11:44.859524Z","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"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/joomla/joomla-cms","events":[{"introduced":"c1acb7e6973bd549fe35a02659fe851ff1a37dfe"},{"fixed":"e5ba4486e48982c41022e59e3ba0a7bf413d6bf1"}],"database_specific":{"source":"CPE_RANGE","extracted_events":[{"introduced":"3.0.0"},{"fixed":"3.9.15"}],"cpe":"cpe:2.3:a:joomla:joomla\\!:*:*:*:*:*:*:*:*"}}],"versions":["3.9.15-rc","3.9.14","3.9.14-rc","3.9.13","3.9.12","3.9.13-rc2","3.9.13-rc","3.9.12-rc","3.9.11","3.9.10","3.9.8","3.9.11-rc","3.9.9","3.9.6","3.9.5","3.9.9-rc","3.9.4","3.9.3","3.9.7","3.9.7-rc","3.9.2-rc","3.9.1","3.9.6-rc2","3.9.6-rc","3.9.0","3.9.0-rc","3.9.0-beta4","3.9.5-rc","3.9.4-rc","3.8.11","3.9.3-rc","3.9.2","3.8.8","3.9.1-rc","3.9.0-rc2","3.8.7","3.8.12","3.9.0-beta3","3.9.0-beta2","3.9.0-beta","3.8.12-rc","3.8.11-rc","3.8.6","3.8.10","3.8.9","3.8.4","3.8.9-rc","issues-241-257","3.8.8-rc","3.8.7-rc","3.8.6-rc1","3.8.3","3.8.3-rc","3.8.5","3.8.5-rc","3.8.4-rc2","3.8.4-rc","3.8.2","3.8.1","3.8.0","3.8.2-rc","3.8.1-rc","3.8.0-rc1","3.8.0-beta2","3.8.0-beta4","3.8.0-beta1","3.8.0-beta3","3.7.4-rc1","3.7.4-beta1","3.7.3","3.7.3-rc2","3.7.3-rc1","3.7.3-beta1","3.7.2","3.7.1","3.7.1-rc2","3.7.1-rc1","3.7.0","3.7.0-rc4","3.7.0-rc3","3.7.0-rc2","3.7.0-rc1","3.7.0-beta4","3.7.0-beta3","3.7.0-beta2","3.7.0-beta1","3.7.0-alpha1","3.6.3","3.6.3-rc3","3.6.3-rc2","3.6.3-rc1","3.6.2","3.6.1","3.6.1-rc2","3.6.1-rc1","3.6.0","3.6.0-rc2","3.6.0-rc","3.6.0-beta2","3.6.0-beta1","3.6.0-alpha","3.5.1","3.5.1-rc2","3.5.1-rc","3.5.0","3.5.0-rc4","3.5.0-rc2","3.5.0-rc","3.5.0-beta5","3.5.0-beta4","3.5.0-beta3","3.5.0-beta2","3.4.5","3.5.0-beta","3.4.4","3.4.4-rc2","3.4.4-rc","3.4.3","3.4.2","3.4.2-rc","3.4.1","3.4.1-rc2","3.4.1-rc","3.4.0","3.4.0-rc","3.4.0-beta3","3.4.0-beta2","3.4.0-beta1","3.2.4","3.3.0","3.2.3","3.2.2","3.2.1","3.2.0","3.1.5","3.2.0.rc","3.2.0.beta","3.2.0.alpha","3.1.1","3.0.3","3.1.0_beta5","3.1.0_beta4","3.1.0_beta3","3.1.0_beta2","3.1.0_beta1","3.0.1","3.0.0"],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2020-8420.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H"}]}