source: https://www.securityfocus.com/bid/18699/info
 
VCard PRO is prone to multiple SQL-injection vulnerabilities. These issues are due to a failure in the application 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 implementation.
 
http://www.example.com/rating.php?card_id=[SQL]