Description
WordPress Plugin Contact Form Generator is prone to multiple cross-site request forgery vulnerabilities. Exploiting these issues 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 Contact Form Generator version 2.1.86 is vulnerable; prior versions may also be affected.
Remediation
Edit the source code to ensure that CSRF protection is implemented with Nonce-like mechanism or disable the plugin until a fix is available
References
https://www.exploit-db.com/exploits/38086/
https://packetstormsecurity.com/files/133463/WordPress-Contact-Form-Generator-2.0.1-CSRF.html
https://wordpress.org/plugins/contact-form-generator/#description