Description
Input passed to the "User-Agent" header parameter it isn't properly sanitised before being returned to the user on 404 or 500 error. This can be exploited to execute arbitrary HTML and script code in a user's browser session in context of an affected site.
Confirmed in version MX 7. Other versions may also be affected.
Remediation
Contact the vendor for further information.
References
Related Vulnerabilities
WordPress Plugin The Welcomizer 'twiz-index.php' Cross-Site Scripting (1.3.9.4)
WordPress Plugin Aviary Image Editor Add-on For Gravity Forms Arbitrary File Upload (3.0)
WordPress Plugin Zingiri Web Shop 'ajax_save_name.php' Remote Code Execution (2.2.3)
WordPress Plugin Page Showcaser Boxes Cross-Site Scripting (1.1)
WordPress Plugin TheThe Layout Grid Cross-Site Scripting (1.0.0)