Multiple cross-site scripting (XSS) vulnerabilities in PHP-Fusion before 7.02.06 allow remote attackers to inject arbitrary web script or HTML via the (1) highlight parameter to forum/viewthread.php; or remote authenticated users with certain permissions to inject arbitrary web script or HTML via the (2) user_list or (3) user_types parameter to messages.php; (4) message parameter to infusions/shoutbox_panel/shoutbox_admin.php; (5) message parameter to administration/news.php; (6) panel_list parameter to administration/panel_editor.php; (7) HTTP User Agent string to administration/phpinfo.php; (8) "__BBCODE__" parameter to administration/bbcodes.php; errorMessage parameter to (9) article_cats.php, (10) download_cats.php, (11) news_cats.php, or (12) weblink_cats.php in administration/, when error is 3; or (13) body or (14) body2 parameter to administration/articles.php.