{"id":"CVE-2026-90906","title":"Joomla! Core - [20260901] - XSS in HTMLHelper::link method in Joomla 1.5.0-5.4.8, 6.0.0-6.1.3 - Lack of escaping leads to XSS vulnerabilities in the link method of the HTML Helper.","summary":"Joomla! Core - [20260901] - XSS in HTMLHelper::link method in Joomla 1.5.0-5.4.8, 6.0.0-6.1.3 - Lack of escaping leads to XSS vulnerabilities in the link method of the HTML Helper.","severity":"high","cvss":8.3,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/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":"2026-10-06T16:48:17.510","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-90906","references":[{"url":"https://developer.joomla.org/security-centre/1081-20260901-core-xss-in-htmlhelper-link-method.html","label":"security@joomla.org"},{"url":"https://www.joomla.org/","label":"security@joomla.org"}],"tags":["nvd","cve.org","score-dispute"],"epss":0.00216,"epssPercentile":0.1192,"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"total","timestamp":"2026-09-30T15:11:58.939877Z"},"scores":{"nvd":8.3,"cna":5.9},"ingestedAt":"2026-09-29T17:41:02.207Z","slug":"CVE-2026-90906","body":"## Overview\n\nJoomla! Core - [20260901] - XSS in HTMLHelper::link method in Joomla 1.5.0-5.4.8, 6.0.0-6.1.3 - Lack of escaping leads to XSS vulnerabilities in the link method of the HTML Helper.\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":"twilight","depthScore":46,"depthScoreParts":{"impact":45.7,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[{"seq":216551,"id":"CVE-2026-90906","ts":1791306614913,"field":"cvss","old":"5.9","new":"8.3"},{"seq":216550,"id":"CVE-2026-90906","ts":1791306614913,"field":"severity","old":"medium","new":"high"}]}