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Medium · 6.5 CVE-2026-28557 EUVD-2026-9106GHSA-gfm6-fcx7-chmc

wpForo Forum < 2.4.16 Privilege Escalation via Role Synchronization Handler

Published Feb 28, 2026 · Updated May 25, 2026 · Assigned by VulnCheck

Description

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

Affected products

VendorProductAffectedFixed
gVectors Team wpForo Forum 2.4 – < 2.4.16 2.4.16

References