A potentially dangerous Request.QueryString value was detected from the client

Olli
Posts: 1
Joined: Wed Jul 06, 2016 6:40 pm
Location: Turku, Finland

A potentially dangerous Request.QueryString value was detected from the client

Postby Olli » Wed Jul 06, 2016 6:58 pm

Hi

I have a fresh installation of MailEnable 9.14 standard on Windows 2012 R2. When I log in to the webmail with an acount and try to send an email, nothing happens at the page no errors no nothing, but in event log I get this error:

Exception type: HttpRequestValidationException
Exception message: A potentially dangerous Request.QueryString value was detected from the client (Options="<options><option><na...").
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_QueryString()
at System.Web.UI.Page.DeterminePostBackMode()
at System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint)
at System.Web.UI.Page.ProcessRequest(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint)
at System.Web.UI.Page.ProcessRequest()
at System.Web.UI.Page.ProcessRequest(HttpContext context)
at System.Web.HttpApplication.CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute()
at System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously)

MailEnable-Ian
Site Admin
Posts: 8220
Joined: Mon Mar 22, 2004 4:44 am
Location: Melbourne, Victoria, Australia

Re: A potentially dangerous Request.QueryString value was detected from the client

Postby MailEnable-Ian » Wed Aug 31, 2016 12:27 am

Hi,

Does this still occur in 9.17?
Regards,

Ian Margarone
MailEnable Support

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