CVE-2026-28557

Medium

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.

SeverityMedium

CVSS6.5

Exploit probability—

ProductGvectors Wpforo Forum

PublishedFeb 28, 2026

First seenFeb 28, 2026

Weakness typeCWE-862Missing authorization

How to fix

Update

gvectors wpforo_forum2.4.16 or later

Patches

wordpress.org/plugins/wpforo/#developers

Affected products

Product	Affected versions	Fixed in
gvectors wpforo_forum	2.4.0 ≤ v < 2.4.16	2.4.16

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