CVE-2026-7797 Appointment Booking Calendar <= 1.6.11.8 - Unauthenticated SQL Injection via 'append_where_sql' Parameter

The Appointment Booking Calendar — Simply Schedule Appointments Booking Plugin plugin for WordPress is vulnerable to time-based blind SQL Injection via the 'appendwheresql' parameter in all versions up to, and including, 1.6.11.8 due to insufficient escaping on the user supplied parameter and lac...