Remote Code Execution through File Upload in SOPlanning before 1.52.02

A unauthenticated Remote Code Execution (RCE) vulnerability is found in the SO Planning online planning tool. If the public view setting is enabled, a attacker can upload a PHP-file that will be available for execution for a few milliseconds before it is removed, leading to execution of code on the underlying system. The vulnerability has been remediated in version 1.52.02.