source: http://www.securityfocus.com/bid/20109/info

Neon WebMail is prone to multiple input-validation vulnerabilities because it fails to sanitize user-supplied input. These issues include:

- an arbitrary-file-upload vulnerability
- an arbitrary-email-manipulation vulnerability
- multiple SQL-injection vulnerabilities
- an unauthorized-access vulnerability
- multiple directory-traversal vulnerabilities
- an HTML-injection vulnerability. 

An attacker can exploit these issues to compromise the affected application.

Versions 5.06 and 5.07 (build.200607050) are vulnerable to these issue; prior versions may also be affected.

http://www.example.com/neonwebmail/downloadfile?filename=filename.ext&savefolder=[traversal]&savefilename=[traversal]