Multiple WordPress WooThemes Themes - 'test.php' Cross-Site Scripting

source: https://www.securityfocus.com/bid/48110/info

Multiple WordPress WooThemes (Live Wire) are prone to a cross-site scripting vulnerability because they fail to sufficiently sanitize user-supplied data.

An attacker may leverage this issue to execute arbitrary script code in the browser of an unsuspecting user in the context of the affected site. This may allow the attacker to steal cookie-based authentication credentials and to launch other attacks. 

http://www.example.com/wp-content/themes/_theme's_name_/includes/test.php?a[]=%3Cscript%3Ealert(document.cookie)%3C/script%3E