Description
WordPress Plugin YouTube 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 YouTube version 11.8.1 is vulnerable; prior versions may also be affected.
Remediation
Update to plugin version 11.8.2 or latest
References
https://security.dxw.com/advisories/csrf-in-youtube-plugin/
http://seclists.org/fulldisclosure/2017/Jul/64
https://plugins.svn.wordpress.org/youtube-embed-plus/trunk/readme.txt