CVE-2026-28557

wpForo Forum < 2.4.16 Privilege Escalation via Role Synchronization Handler

CVSS 7.1 HIGHEPSS 0.3%CWE-862

Vexday Risk Score

21Low

SSVC decision (CISA)

Track

No exploitation signal → monitor

CVSS 7.1EPSS 0.3%KEV nãoPoC —Nuclei —Metasploit —Patch referenciado

Lifecycle

28 Feb 2026Published on NVD

Recommendation: Monitor — no exploitation signal at the moment.

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.

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

Affected products

gVectors Team · wpForo Forum

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References

https://wordpress.org/plugins/wpforo/https://wordpress.org/plugins/wpforo/#developers https://www.vulncheck.com/advisories/wpforo-forum-privilege-escalation-via-role-synchronization-handler