Cross-site scripting (XSS) vulnerability in the news comment functionality in F3Site 2.1 and earlier allows remote attackers to inject arbitrary web script or HTML via the Autor field.

Unrestricted file upload vulnerability in F3Site 2.1 and earlier allows remote authenticated administrators to upload and execute arbitrary PHP scripts via GIF86 header in a file in the uplf parameter, which can be later accessed via a relative pathname in the dir parameter in adm.php.