source: http://www.securityfocus.com/bid/21514/info
       
AnnonceScriptHP is prone to multiple input-validation vulnerabilities, including SQL-injection and cross-site scripting issues, because it fails to sufficiently sanitize user-supplied data.
       
Exploiting these issues could allow an attacker to steal cookie-based authentication credentials, compromise the application, access or modify sensitive data, or exploit latent vulnerabilities in the underlying database implementation.
       
AnnonceScriptHP V2.0 is vulnerable.

http://www.example.com/[script_annonce_path]/voirannonce.php?no=[SQL INJECTION]