Description
WordPress Plugin Ninja Forms Contact Form-The Drag and Drop Form Builder for WordPress 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 Ninja Forms Contact Form-The Drag and Drop Form Builder for WordPress version 3.4.27 is vulnerable; prior versions may also be affected.
Remediation
Update to plugin version 3.4.27.1 or latest
References
https://wpdeeply.com/ninja-forms-before-3-4-27-1-simple-csrf-to-rce/
https://plugins.svn.wordpress.org/ninja-forms/trunk/readme.txt