CVE-2004-2480
Squid Web Proxy Cache 2.3.STABLE5 allows remote attackers to bypass security controls and access arbitrary websites via "@@" sequences in a URL within Internet Explorer.
Date published : 2005-08-21
http://www.securityfocus.com/bid/10315
http://archives.neohapsis.com/archives/bugtraq/2004-05/0070.html