{"id":"CVE-2026-92231","title":"Joomla! Core - [20260915] - Core - XSS filter bypass in InputFilter via HTML5 entity decode mismatch in Joomla 1.5.0-5.4.8, 6.0.0-6.1.3 - The checkAttribute method normalized an attribute value before testing it against the \"javascript:\"…","summary":"Joomla! Core - [20260915] - Core - XSS filter bypass in InputFilter via HTML5 entity decode mismatch in Joomla 1.5.0-5.4.8, 6.0.0-6.1.3 - The checkAttribute method normalized an attribute value before testing it against the \"javascript:\"…","severity":"medium","cvss":6.7,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:L","cwe":["CWE-79"],"vendor":"joomla","product":"joomla!","affected":["joomla! >= 1.5.0, < 5.4.8","joomla! >= 6.0.0, < 6.1.3"],"patched":["joomla! 6.1.3"],"published":"2026-09-29","updated":"2026-10-06","sourceUpdated":"2026-10-06T16:41:22.977","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-92231","references":[{"url":"https://developer.joomla.org/security-centre/1095-20260915-core-xss-filter-bypass-in-inputfilter-via-html5-entity-decode-mismatch.html","label":"security@joomla.org"},{"url":"https://www.joomla.org/","label":"security@joomla.org"}],"tags":["nvd","cve.org"],"epss":0.00268,"epssPercentile":0.18874,"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"total","timestamp":"2026-09-30T15:10:16.956004Z"},"scores":{"nvd":6.7,"cna":7.1},"ingestedAt":"2026-09-29T17:41:02.212Z","slug":"CVE-2026-92231","body":"## Overview\n\nJoomla! Core - [20260915] - Core - XSS filter bypass in InputFilter via HTML5 entity decode mismatch in Joomla 1.5.0-5.4.8, 6.0.0-6.1.3 - The checkAttribute method normalized an attribute value before testing it against the \"javascript:\" scheme regex, however without decoding HTML5 entities beforehand, causing an XSS vector.\n\n## Affected\n\n- `joomla! >= 1.5.0, < 5.4.8`\n- `joomla! >= 6.0.0, < 6.1.3`\n\n## Remediation\n\nUpgrade past the affected range:\n\n- `joomla! 6.1.3`","depth":"sunlit","depthScore":37,"depthScoreParts":{"impact":36.9,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[{"seq":216571,"id":"CVE-2026-92231","ts":1791306619783,"field":"cvss","old":"7.1","new":"6.7"},{"seq":216570,"id":"CVE-2026-92231","ts":1791306619783,"field":"severity","old":"high","new":"medium"}]}