Multiple cross-site scripting (XSS) vulnerabilities in Buddy Zone 1.0.1 allow remote attackers to inject arbitrary HTML and web script via the (1) cat_id parameter to (a) view_classifieds.php; (2) id parameter in (b) view_ad.php; (3) event_id parameter in (c) view_event.php, (d) delete_event.php, and (e) edit_event.php; and (4) group_id in (f) view_group.php.