CVE-2026-28554: Gvectors Wpforo Forum

Medium severity, CVSS 4.3. EPSS: 0.4% chance of exploitation in the next 30 days.

wpForo Forum 2.4.14 contains a missing authorization vulnerability that allows authenticated subscribers to approve or unapprove any forum post via the wpforo_approve_ajax AJAX handler. Attackers exploit the nonce-only check by submitting a valid nonce with an arbitrary post ID to bypass moderation controls entirely.

Affected products

• Gvectors Wpforo Forum: from 2.4.0, before 2.4.16 (fixed in 2.4.16)

Published 2026-02-28. Last modified 2026-06-17.