CVE-2026-28562: Gvectors Wpforo Forum

Critical severity, CVSS 9.8. EPSS: 0.5% chance of exploitation in the next 30 days.

wpForo 2.4.14 contains an unauthenticated SQL injection vulnerability in Topics::get_topics() where the ORDER BY clause relies on ineffective esc_sql() sanitization on unquoted identifiers. Attackers exploit the wpfob parameter with CASE WHEN payloads to perform blind boolean extraction of credentials from the WordPress database.

Affected products

• Gvectors Wpforo Forum: from 2.4.0, before 2.4.15 (fixed in 2.4.15)

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