You've Been Warned (AJAX vulenerable to attack)

I was just passed this article from a friend with regard to an AJAX vulenerability. It's a must read as it impacts the following frameworks:

"Vulnerable frameworks include: Microsoft ASP.NET AJAX (aka. Atlas), XAJAX and Google Web Toolkit, Prototype, Script.aculo.us, Dojo, Moo.fx, jQuery, Yahoo! UI, Rico, and MochiKit."

I don't see Spry on the list.

Check it out here.