source: http://www.securityfocus.com/bid/30731/info
  
Freeway is prone to multiple local file-include vulnerabilities because it fails to properly sanitize user-supplied input.
  
An attacker can exploit these vulnerabilities using directory-traversal strings to view local files in the context of the webserver process. This may aid in further attacks.
  
Freeway 1.4.1.171 is vulnerable; other versions may also be affected.

http://www.example.com/[installdir]/includes/languages/french/account_newsletters.php? language=../../../../../../../../../../../../../etc/passwd%00