WordPress Plugin Comments-wpDiscuz is prone to a vulnerability that lets attackers upload arbitrary files because the application fails to properly verify user-supplied input. An attacker can exploit this vulnerability to upload arbitrary code and run it in the context of the webserver process. This may facilitate unauthorized access or privilege escalation; other attacks are also possible. WordPress Plugin Comments-wpDiscuz versions between and including 7.0.0 - 7.0.4 are vulnerable.
Update to plugin version 7.0.5 or latest