Open Source Matters · Joomla! · CVE-2018-17855
**Name of the Vulnerable Software and Affected Versions**
Joomla! versions prior to 3.8.13
**Description**
An issue was discovered where an attacker who gains access to the mail account of a user authorized to approve admin verifications in the registration process can activate themselves as an admin.
**Recommendations**
For versions prior to 3.8.13, update to version 3.8.13 or later to resolve the issue.