Description
WordPress Plugin Related YouTube Videos 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 Related YouTube Videos version 1.9.8 is vulnerable; prior versions may also be affected.
Remediation
Update to plugin version 1.9.9 or latest
References
http://jvn.jp/en/jp/JVN31406910/index.html
https://plugins.svn.wordpress.org/related-youtube-videos/trunk/readme.txt