CVE-2026-28557 wpForo Forum < 2.4.16 Privilege Escalation via Role Synchronization Handler

wpForo Forum 2.4.14 contains a missing capability check vulnerability that allows authenticated users to trigger bulk wpForo usergroup reassignment via the wpforosynchroles AJAX handler. Attackers access the usergroups admin page, accessible to any authenticated user, to obtain a nonce, then rema...