A vulnerability, which was classified as problematic, was found in veal98 小牛肉 Echo 开源社区系统 4.2. Affected is the function preHandle of the file src/main/java/com/greate/community/controller/interceptor/LoginTicketInterceptor.java of the component Ticket Handler. The manipulation leads to improper authorization. It is possible to launch the attack remotely. The exploit has been disclosed to the public and may be used.