source: https://www.securityfocus.com/bid/15837/info
 
PhpWebGallery is prone to multiple SQL-injection vulnerabilities because the application fails to properly sanitize user-supplied input before using it in SQL queries.
 
A successful exploit could allow an attacker to compromise the application, access or modify data, or exploit vulnerabilities in the underlying database. 

http://www.example.com/category.php?cat=search&search=[SQL]