Description
WordPress Plugin Custom Field Template 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 Custom Field Template version 2.5.1 is vulnerable; prior versions may also be affected.
Remediation
Update to plugin version 2.5.2 or latest
References
https://blog.nintechnet.com/25-wordpress-plugins-vulnerable-to-csrf-attacks/
https://plugins.svn.wordpress.org/custom-field-template/trunk/readme.txt