source: http://www.securityfocus.com/bid/19977/info
          
Telekorn Signkorn Guestbook is prone to multiple remote file-include vulnerabilities because it fails to sufficiently sanitize user-supplied data.
          
This may allow the attacker to compromise the application and the underlying system; other attacks are also possible.
          
Versions 1.3 and earlier are affected by this issue.

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