CVE-2026-28557CWE-862

wpForo Forum < 2.4.16 Privilege Escalation via Role Synchronization Handler

High · published February 28, 2026

CVSS v4.0
7.1
EPSS
0%
Percentile
33.5
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v4.0
7.1 · HIGH
Vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N
EPSS
0.00404 · 33.5th percentile
Weakness
CWE-862 · Missing Authorization
Published
2026-02-28T21:47Z
EPSS history
Timeline
  • 28 FEB 21:47Z
    wpForo Forum < 2.4.16 Privilege Escalation via Role Synchronization Handler
    cvelistv5