source: https://www.securityfocus.com/bid/14474/info

Portail PHP is prone to an SQL injection vulnerability. This issue is due to a failure in the application to properly sanitize user-supplied input before using it in SQL queries.

The consequences of this attack may vary depending on the type of queries that can be influenced, and the implementation of the database.

This issue is reported to affect Portail PHP version 2.4; Conflicting reports indicate this information may be inaccurate. 

http://www.example.com/portailphp/index.php?affiche=Forum-read_mess&id='