CRLF injection vulnerability in CS-Forum before 0.82 allows remote attackers to inject arbitrary email headers via a newline character in the email parameter to ajouter.php.
https://exchange.xforce.ibmcloud.com/vulnerabilities/27177
http://www.vupen.com/english/advisories/2006/2314
http://www.comscripts.com/scripts/php.cs-forum.643.html