Description
WordPress Plugin Custom CSS Pro 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 CSS Pro version 1.0.3 is vulnerable; prior versions may also be affected.
Remediation
Update to plugin version 1.0.4 or latest
References
http://jvn.jp/en/jp/JVN29933378/index.html
https://plugins.svn.wordpress.org/custom-css-pro/trunk/readme.txt