Description
WordPress Plugin WP User Groups is prone to a cross-site request forgery vulnerability. Exploiting this issue may allow a remote attacker to perform certain administrative actions and gain unauthorized access to the affected application; other attacks are also possible. WordPress Plugin WP User Groups version 2.0.0 is vulnerable; prior versions may also be affected.
Remediation
Update to plugin version 2.1.1 or latest
References
https://advisories.dxw.com/advisories/csrf-wp-user-groups/
http://seclists.org/fulldisclosure/2018/May/27
https://plugins.svn.wordpress.org/wp-user-groups/trunk/readme.txt