A vulnerability classified as critical was found in hzmanyun Education and Training System 3.1.1. This vulnerability affects the function saveImage. The manipulation of the argument file leads to unrestricted upload. The attack can be initiated remotely. The exploit has been disclosed to the public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.
CWE-284, CWE-434, CWE-434