Double unescape bug in PHP module
Created by: jw35
There's some suggestion that there's a bug somewhere that results in a double URL-unescape when decoding response messages. This then results in signature validation failures. The suggestion is that this may trigger where data in the response message contains non-ASCII characters.
There is some further information on this is UIS RT ticket #255722, in particular that the URL causing the problem may have been something like
http:///formnew/viewsw.php?id=20608&element_5_3=Möller