{"id":"CVE-2018-11326","aliases":["GHSA-g3m5-vvj7-xrwv"],"url":"https://o3.security/vulnerability/CVE-2018-11326","summary":"Joomla! XSS Vulnerability","details":"An issue was discovered in Joomla! Core starting in 3.0.0 and prior to 3.8.8. Inadequate input filtering leads to a multiple XSS vulnerabilities. Additionally, the default filtering settings could potentially allow users of the default Administrator user group to perform a XSS attack.","published":"2018-05-22T15:29:00.450Z","modified":"2026-07-08T14:13:43.975612Z","cvss":{"score":4.8,"severity":"MEDIUM","vector":"CVSS:3.0/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N"},"epss":{"score":0.0105,"percentile":0.62628,"asOf":"2026-09-17"},"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"Packagist","name":"joomla/joomla-cms","fixedVersion":"3.8.8"}],"fix":null,"references":[{"type":"ADVISORY","url":"http://www.securityfocus.com/bid/104270"},{"type":"ADVISORY","url":"http://www.securitytracker.com/id/1040966"},{"type":"ADVISORY","url":"https://developer.joomla.org/security-centre/733-20180505-core-xss-vulnerabilities-additional-hadering.html"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2018-11326"},{"type":"PACKAGE","url":"https://github.com/joomla/joomla-cms"},{"type":"WEB","url":"https://web.archive.org/web/20210124173032/http://www.securityfocus.com/bid/104270"},{"type":"WEB","url":"https://web.archive.org/web/20211129145422/http://www.securitytracker.com/id/1040966"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-07-08T14:13:43.975612Z"}}