Multiple cross-site scripting (XSS) vulnerabilities in ViArt Helpdesk 3.x allow remote attackers to inject arbitrary web script or HTML via the category_id parameter to (1) products.php, (2) article.php, (3) product_details.php, or (4) reviews.php; the (5) forum_id parameter to forum.php; or the (6) search_category_id parameter to products_search.php.