Vulnerability ID: HTB22889 Reference: http://www.htbridge.ch/advisory/xss_in_rating_widget_wordpress_plugin.html Product: Rating-Widget wordpress plugin Vendor: Vova Feldman ( http://rating-widget.com/ ) Vulnerable Version: 1.3.1 Vendor Notification: 03 March 2011 Vulnerability Type: XSS (Cross Site Scripting) Risk level: Medium Credit: High-Tech Bridge SA - Ethical Hacking & Penetration Testing (http://www.htbridge.ch/) Vulnerability Details: The vulnerability exists due to failure in the "/wp-content/plugins/rating-widget/view/availability_options.php" script to properly sanitize user-supplied input in "selected_key" variable when register_globals is on. User can execute arbitrary JavaScript code within the vulnerable application. Successful exploitation of this vulnerability could result in a compromise of the application, theft of cookie-based authentication credentials, disclosure or modification of sensitive data. The following PoC is available: http://[host]/wp-content/plugins/rating-widget/view/availability_options.php?selected_key=%3Cscript%3Ealert%28%22XSS%22%29;%3C/script%3E