Symantec Web Gateway: Cross-Site Scripting (XSS) (CVE-2013-4670)

I found a Cross-Site Scripting (XSS) vulnerability within the Symantec Web Gateway.

The CVE

Acknowledgements

This issue was identified by myself, as well as independently by another security researcher:

Symantec thanks Glenn 'devalias' Grant, http://devalias.net, for also reporting CVE-2013-4670 and working with us as we addressed them.