CVE-2013-5042 | Microsoft ASP .NET SignalR 1.1.0/1.1.1/1.1.2/1.1.3/2.0.0 cross site scripting (MS13-103 / KB2903919)
A vulnerability classified as critical was found in Microsoft ASP .NET SignalR 1.1.0/1.1.1/1.1.2/1.1.3/2.0.0. Affected by this vulnerability is an unknown functionality. The manipulation leads to cross site scripting.
This vulnerability is known as CVE-2013-5042. The attack can be launched remotely. There is no exploit available.
It is recommended to apply a patch to fix this issue.