Petite Annonce 'categoriemoteur' Cross Site Scripting Vulnerability

Summary
This host is installed with Petite Annonce and is prone to cross site scripting vulnerability.
Impact
Successful exploitation will allow attacker to execute arbitrary HTML or web script in a user's browser session in context of an affected site. Impact Level: Application
Solution
No solution or patch was made available for at least one year since disclosure of this vulnerability. Likely none will be provided anymore. General solution options are to upgrade to a newer release, disable respective features, remove the product or replace the product by another one.
Insight
Input passed via the 'categoriemoteur' GET parameter to 'moteur-prix.php' is not properly sanitized before being used.
Affected
Petite Annonce version 1.0
References