CVE-2016-8870 EXPLOIT
8.1
HIGH · CVSS 3.0 · EPSS 81.1% (pctl 100)
Patch early
A public exploit exists.
Description
The register method in the UsersModelRegistration class in controllers/user.php in the Users component in Joomla! before 3.6.4, when registration has been disabled, allows remote attackers to create user accounts by leveraging failure to check the Allow User Registration configuration setting.
Scoring
| CVSS | 8.1 (HIGH, v3.0) |
|---|---|
| Vector | CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H |
| EPSS | 81.14% — more likely to be exploited than 100% of all CVEs |
| Weakness | CWE-20 |
| On CISA KEV | no |
| Public exploit | yes |
| Published | 2016-11-04 |
| Last modified | 2026-06-17 |
Affected (1)
| Vendor | Product |
|---|---|
| joomla | joomla\! |
Public exploits
| Source | Title | Date |
|---|---|---|
| exploit-db | Joomla! 3.4.4 < 3.6.4 - Account Creation / Privilege Escalation | 2016-10-27 |
References
- http://www.rapid7.com/db/modules/auxiliary/admin/http/joomla_registration_privesc
- http://www.securityfocus.com/bid/93876
- http://www.securitytracker.com/id/1037107
- http://www.securitytracker.com/id/1037108
- https://blog.sucuri.net/2016/10/details-on-the-privilege-escalation-vulnerability-in-joomla.html
- https://developer.joomla.org/security-centre/659-20161001-core-account-creation.html
- https://github.com/joomla/joomla-cms/commit/bae1d43938c878480cfd73671e4945211538fdcf
- 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/
- http://www.rapid7.com/db/modules/auxiliary/admin/http/joomla_registration_privesc
- http://www.securityfocus.com/bid/93876
- http://www.securitytracker.com/id/1037107
- http://www.securitytracker.com/id/1037108
- https://blog.sucuri.net/2016/10/details-on-the-privilege-escalation-vulnerability-in-joomla.html
- https://developer.joomla.org/security-centre/659-20161001-core-account-creation.html
- https://github.com/joomla/joomla-cms/commit/bae1d43938c878480cfd73671e4945211538fdcf
- 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/
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