C#: Can AuthorizeAttribute.GetRedirectResult() be hacked?

C#: Can AuthorizeAttribute.GetRedirectResult() be hacked?

I see the following over-ride of GetRedirectResult()

        private ActionResult GetRedirectResult(AuthorizationContext context, string controller, string action, string clientId = null,
            List<KeyValuePair<string, object>> additionalParameters = null)
            var returnUrl = context.HttpContext.Request.RawUrl;


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but notice the value for Request.RawUrl is a simple path, generated by our code:


So, I wonder if I need to do any URL sanitizing on this, given it seems based on C# and not user generated.

Is this something that can be ignored?

newbiewebSr. Software EngineerAsked:
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newbiewebSr. Software EngineerAuthor Commented:
that value for:

is also the value of the sole function parameter, returnUrl into:


Is it fair to say that value also does NOT need to be cleansed? In that very function I DO sanitize:


and assert that the returlUrl in that path is whitelisted.

Am I safe?
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