CVE-2016-8870

high

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.

References

Advisories
More

http://www.securitytracker.com/id/1037108

http://www.securityfocus.com/bid/93876

https://github.com/DaDecky/kpl-cve-vuln-pocs

https://github.com/rustyJ4ck/JoomlaCVE20168869

https://medium.com/%40showthread/joomla-3-6-4-account-creation-elevated-privileges-write-up-and-exploit-965d8fb46fa2#.rq4qh1v4r

https://github.com/joomla/joomla-cms/commit/bae1d43938c878480cfd73671e4945211538fdcf

https://developer.joomla.org/security-centre/659-20161001-core-account-creation.html

https://blog.sucuri.net/2016/10/details-on-the-privilege-escalation-vulnerability-in-joomla.html

http://www.securitytracker.com/id/1037107

Details

Source: Mitre, NVD

Published: 2016-11-04

Updated: 2026-06-17

Risk Information

CVSS v2

Base Score: 6.8

Vector: CVSS2#AV:N/AC:M/Au:N/C:P/I:P/A:P

Severity: Medium

CVSS v3

Base Score: 8.1

Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Severity: High

EPSS

EPSS: 0.81207