{"id":"CVE-2016-8869","aliases":[],"url":"https://o3.security/vulnerability/CVE-2016-8869","summary":null,"details":"The register method in the UsersModelRegistration class in controllers/user.php in the Users component in Joomla! before 3.6.4 allows remote attackers to gain privileges by leveraging incorrect use of unfiltered data when registering on a site.","published":"2016-11-04T21:59:07.553Z","modified":"2026-10-20T10:47:31.350799766Z","cvss":{"score":9.8,"severity":"CRITICAL","vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},"epss":{"score":0.97244,"percentile":0.99892,"asOf":"2026-09-16"},"cisaKev":null,"exploitsKnown":8,"affectedPackages":[],"fix":{"url":"https://github.com/joomla/joomla-cms/commit/bae1d43938c878480cfd73671e4945211538fdcf","label":"joomla/joomla-cms@bae1d43"},"references":[{"type":"WEB","url":"https://medium.com/%40showthread/joomla-3-6-4-account-creation-elevated-privileges-write-up-and-exploit-965d8fb46fa2#.rq4qh1v4r"},{"type":"ADVISORY","url":"http://www.rapid7.com/db/modules/auxiliary/admin/http/joomla_registration_privesc"},{"type":"ADVISORY","url":"http://www.securityfocus.com/bid/93883"},{"type":"ADVISORY","url":"http://www.securitytracker.com/id/1037108"},{"type":"ADVISORY","url":"https://developer.joomla.org/security-centre/660-20161002-core-elevated-privileges.html"},{"type":"FIX","url":"https://github.com/joomla/joomla-cms/commit/bae1d43938c878480cfd73671e4945211538fdcf"},{"type":"EVIDENCE","url":"https://blog.sucuri.net/2016/10/details-on-the-privilege-escalation-vulnerability-in-joomla.html"},{"type":"EVIDENCE","url":"https://www.exploit-db.com/exploits/40637/"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-10-20T10:47:31.350799766Z"}}