rich text editor raising the unsafe value exception - Using Umbraco 7

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Joao Baptista 8 posts 58 karma points

Jun 23, 2014 @ 16:53

Rich text editor raising the unsafe value exception?

Using Umbraco 7

Hi all

I'm on Umbraco 7.1.4 and the rich text editor property is raising the unsafe value exception as per below:

2014-06-23 15:50:10,469 [14] ERROR Umbraco.Core.UmbracoApplicationBase - [Thread 5] An unhandled exception occurred
System.Web.HttpRequestValidationException (0x80004005): A potentially dangerous Request.Form value was detected from the client (contentItem="...,"value":"<p>ad</p>"},{"id":24...").
   at System.Web.HttpRequest.ValidateString(String value, String collectionKey, RequestValidationSource requestCollection)
   at System.Web.HttpRequest.ValidateHttpValueCollection(HttpValueCollection collection, RequestValidationSource requestCollection)
   at System.Web.HttpRequest.get_Form()
   at System.Web.HttpRequest.get_Item(String key)
   at System.Web.HttpRequestWrapper.get_Item(String key)
   at Umbraco.Core.Profiling.WebProfiler.CanPerformProfilingAction(Object sender)
   at Umbraco.Core.Profiling.WebProfiler.UmbracoApplicationBeginRequest(Object sender, EventArgs e)
   at System.Web.HttpApplication.SyncEventExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute()
   at System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously)

I know what this is. This is just the good old form submission validation for unescaped characters, but the weird thing is that the same rich text editor works great in other Umbraco websites and accepts content from the rich text editor perfectly.

Is there any obvious place to look or will I have to completely delete the document type and do it again hoping that it will fix this problem?

Regards

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Joao Baptista 8 posts 58 karma points

Jun 23, 2014 @ 17:12

100

Resolved.

If it happens to anyone else add requestValidationMode="4.5" to <httpRuntime enableVersionHeader="false" in your web.config. Add the validation mode according to your VS version.

Weirdly enough I did not have to do this for any other or of our umbraco sites.

This should sort anyone that has the potentially dangerous value exception from a rich text editor.

Cheers

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