SQL Injection exists in Vastal I-Tech Buddy Zone Facebook Clone 2.9.9 via the /chat_im/chat_window.php request_id parameter or the /search_events.php category parameter.
https://www.exploit-db.com/exploits/43918/
https://packetstormsecurity.com/files/146136/Vastal-I-Tech-Facebook-Clone-2.9.9-SQL-Injection.html