CVE-2016-8869 Privilege escalation in n/a
Remote attackers can gain elevated privileges by exploiting improper input validation during user registration in Joomla.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2016-8869?
CVE-2016-8869 is a critical vulnerability in Joomla Joomla\!, published on 4 Nov 2016. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
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.
Weakness: CWE-20
Which versions are affected by CVE-2016-8869?
It affects 1 product.
Products include Joomla Joomla\!.
How do I fix CVE-2016-8869?
No fix has been published for CVE-2016-8869 yet. Limit exposure of the affected software until one is available.
Is CVE-2016-8869 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2016-8869 exists.
Public exploit code: 1 Metasploit module, 1 Exploit-DB entry and 3 proofs of concept on GitHub.
Other vulnerabilities in Joomla Joomla\!
- CVE-2016-10033 PHPMailer Command Injection
- CVE-2023-23752 Joomla! Improper Access Control
- CVE-2026-48902 Joomla! Core - [20260518] - Transport encryption downgrade for password and username reset links
- CVE-2025-25226 [20250401] - Joomla Framework - SQL injection vulnerability in quoteNameStr method of Database package
- CVE-2022-23795 [20220303] - Core - User row are not bound to a authentication mechanism
Sources
Also known as GHSA-v4hj-3rpq-j2ch.