zzcms version 8.3 and earlier contains a SQL Injection vulnerability in zt/top.php line 5 that can result in could be attacked by sql injection in zzcms in nginx. This attack appear to be exploitable via running zzcms in nginx.
https://gist.github.com/Lz1y/3388fa886a3e10edd2a7e93d3c3e5b6c