HIGHCVE-2026-28557Published Modified CNA VulnCheck
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 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.
Metrics
- CVSS v4.0
- 7.1
- Severity
- HIGH
- Fixed in
- 2.4.16
- Affected Products
- 1
Affected packages
- gVectors Team / wpForo Forum< 2.4.16 (from 2.4)Fixed in 2.4.16
CVSS 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