A vulnerability classified as problematic was found in Mindskip xzs-mysql 学之思开源考试系统 3.9.0. Affected by this vulnerability is an unknown functionality of the component CORS Handler. The manipulation leads to permissive cross-domain policy with untrusted domains. The attack can be launched remotely. The complexity of an attack is rather high. The exploitation appears to be difficult. 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.