Description
WordPress Plugin WP Super Cache is prone to a vulnerability that lets remote attackers inject and execute arbitrary code because the application fails to sanitize user-supplied input. Attackers can exploit this issue to execute arbitrary PHP code within the context of the affected webserver process. WordPress Plugin WP Super Cache version 1.2 is vulnerable; prior versions may also be affected.
Remediation
Update to plugin version 1.3.2 or latest
References
https://wordpress.org/support/topic/pwn3d
http://blog.futtta.be/2013/04/18/wp-caching-plugin-vulnerability-debrief/