CVE-2016-8869

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.

• CWE-20

• http://www.rapid7.com/db/modules/auxiliary/admin/http/joomla_registration_privescThird Party Advisory
• http://www.securityfocus.com/bid/93883Third Party Advisory, VDB Entry
• http://www.securitytracker.com/id/1037108Third Party Advisory, VDB Entry
• https://blog.sucuri.net/2016/10/details-on-the-privilege-escalation-vulnerability-in-joomla.htmlExploit, Technical Description, Third Party Advisory
• https://developer.joomla.org/security-centre/660-20161002-core-elevated-privileges.htmlVendor Advisory
• https://github.com/joomla/joomla-cms/commit/bae1d43938c878480cfd73671e4945211538fdcfPatch
• https://medium.com/%40showthread/joomla-3-6-4-account-creation-elevated-privileges-write-up-and-exploit-965d8fb46fa2#.rq4qh1v4r
• https://www.exploit-db.com/exploits/40637/Exploit, Third Party Advisory
• http://www.rapid7.com/db/modules/auxiliary/admin/http/joomla_registration_privescThird Party Advisory
• http://www.securityfocus.com/bid/93883Third Party Advisory, VDB Entry
• http://www.securitytracker.com/id/1037108Third Party Advisory, VDB Entry
• https://blog.sucuri.net/2016/10/details-on-the-privilege-escalation-vulnerability-in-joomla.htmlExploit, Technical Description, Third Party Advisory
• https://developer.joomla.org/security-centre/660-20161002-core-elevated-privileges.htmlVendor Advisory
• https://github.com/joomla/joomla-cms/commit/bae1d43938c878480cfd73671e4945211538fdcfPatch
• https://medium.com/%40showthread/joomla-3-6-4-account-creation-elevated-privileges-write-up-and-exploit-965d8fb46fa2#.rq4qh1v4r
• https://www.exploit-db.com/exploits/40637/Exploit, Third Party Advisory

Published

Nov 4, 2016

Last Modified

Jun 17, 2026

Status

Modified

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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