Multiple cross-site scripting (XSS) vulnerabilities in CS-Forum 0.81 and earlier allow remote attackers to inject arbitrary web script or HTML via the (1) msg_result and (2) rep_titre parameters in (a) read.php; and the (3) id and (4) parent parameters and (5) CSForum_nom, (6) CSForum_mail, and (7) CSForum_url cookie parameters in (b) ajouter.php.