Multiple cross-site scripting (XSS) vulnerabilities in Pligg before 1.0.3 allow remote attackers to inject arbitrary web script or HTML via the HTTP Referer header to (1) admin/admin_config.php, (2) admin/admin_modules.php, (3) delete.php, (4) editlink.php, (5) submit.php, (6) submit_groups.php, (7) user_add_remove_links.php, and (8) user_settings.php.