Multiple cross-site scripting (XSS) vulnerabilities in Amiro.CMS 5.4.0.0 and earlier allow remote attackers to inject arbitrary web script or HTML via the status_message parameter to (1) /news, (2) /comment, (3) /forum, (4) /blog, and (5) /tags; the status_message parameter to (6) forum.php, (7) discussion.php, (8) guestbook.php, (9) blog.php, (10) news.php, (11) srv_updates.php, (12) srv_backups.php, (13) srv_twist_prevention.php, (14) srv_tags.php, (15) srv_tags_reindex.php, (16) google_sitemap.php, (17) sitemap_history.php, (18) srv_options.php, (19) locales.php and (20) plugins_wizard.php in _admin/; a crafted IMG BBcode tag in the message body of a (21) forum, (22) guestbook, or (23) comment; (24) the content of an avatar file, which is not properly handled by Internet Explorer; and (25) the loginname parameter (aka username) in _admin/index.php.