source: https://www.securityfocus.com/bid/37103/info
Fuctweb CapCC Plugin for WordPress is prone to a security-bypass vulnerability that occurs in the audio CAPTCHA protocol.
Successful exploits may allow attackers to bypass security restrictions and perform unauthorized actions.
CapCC 1.0 is affected; other versions may also be vulnerable.
CapCC CAPTCHA bypass exploit (C) 2008 MustLive. http://websecurity.com.ua