A vulnerability, which was classified as problematic, was found in SourceCodester Garage Management System 1.0. Affected is an unknown function of the file /php_action/createUser.php. The manipulation of the argument userName with the input lala<img src="" onerror=alert(1)> leads to cross site scripting. It is possible to launch the attack remotely. The exploit has been disclosed to the public and may be used.