Description
WordPress Plugin User Registration-Custom Registration Form, Login Form And User Profile 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 User Registration-Custom Registration Form, Login Form And User Profile version 3.0.2 is vulnerable; prior versions may also be affected.
Remediation
Update to plugin version 3.0.2.1 or latest
References
https://lana.codes/lanavdb/c0a58dff-7a5b-4cc0-82d6-2255e61d801c/
https://plugins.svn.wordpress.org/user-registration/trunk/readme.txt