Description
WordPress Plugin Clean Login 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 Clean Login version 1.7.12 is vulnerable; prior versions may also be affected.
Remediation
Update to plugin version 1.8 or latest
References
http://seclists.org/fulldisclosure/2017/May/23
https://packetstormsecurity.com/files/142426/WordPress-Clean-Login-Cross-Site-Request-Forgery.html