MyBB ACP Privilege Escalation - Limited Admin Template/Plugin Modification

Ethan Andrews@eandrews

•updated Jun 28, 2026•0•0•0

Detects unauthorized privilege escalation attempts within the MyBB Admin Control Panel (ACP) by monitoring limited-privilege accounts accessing restricted modules (e.g., plugins, templates, user groups). It correlates these web requests with file system changes in the plugin directory by the web server process and monitors application logs for suspicious administrative activity.