source: https://www.securityfocus.com/bid/8517/info

The 'wgate.dll' componenet of SAP Internet Transaction Server has been reported prone to cross-site scripting attacks. The issue occurs due to a lack of sufficient sanitization performed on data supplied to the 'wgate.dll' library. Exploitation could allow theft of cookie-based authentication credentials or other attacks 

http://www.server.name/scripts/wgate.dll?

with params:
~service=--><img%09src=javascript:alert(1)%3bcrap