ColdFusion contains a flaw that allows a remote cross site scripting attack. This flaw exists because the application does not validate any input that is passed to the default error handlers. This could allow a user to create a specially crafted URL that would execute arbitrary code in a user's browser within the trust relationship between the browser and the server, leading to a loss of integrity.
Remote / Network Access
Loss of Integrity
Adobe / Macromedia has released a patch to address this issue. Additionally, it is possible to correct the flaw by implementing the following workaround: turn off the "Robust Exception Information" and "Debugging" options.