CVE-2020-11891: Joomla!

Medium severity, CVSS 5.3. EPSS: 0.8% chance of exploitation in the next 30 days.

An issue was discovered in Joomla! before 3.9.17. Incorrect ACL checks in the access level section of com_users allow the unauthorized editing of usergroups.

Affected products

• Joomla! Joomla!: from 3.8.8, before 3.9.17 (fixed in 3.9.17)

Published 2020-04-21. Last modified 2026-06-17.