title: Remove extra query string parameters from ItemNotFoundUrl
body: <p>I'm using sitecore 5.3 and need to be able to remove the extra query string parameters that sitecore inserts <em>(item=%2faeuaoeu&amp;user=extranet\Anonymous&amp;site=thl)</em> when redirecting to the 404 page specified in ItemNotFoundUrl.</p>
  
  <p>In Sitecore 6 I can set</p>
  
  <pre class="lang-xml prettyprint-override"><code>&lt;setting name="RequestErrors.UseServerSideRedirect" value="true"/&gt;
  </code></pre>
  
  <p>and it works but that setting doesn't exist in sitecore 5.3</p>
  
  <p>I need it so I can fix <a href="http://weblogs.asp.net/scottgu/archive/2010/09/18/important-asp-net-security-vulnerability.aspx" rel="nofollow noreferrer">this asp.net vulnerability</a></p>
  
  <p><strong>Edit: Sitecore's official response has been described in this <a href="http://sitecore.alexiasoft.nl/2010/09/24/asp-net-vulnerability-2416728-and-sitecore/" rel="nofollow noreferrer">article</a></strong></p>