mod_cgid in Apache before 2.0.48, when using a threaded MPM, does not properly handle CGI redirect paths, which could cause Apache to send the output of a CGI program to the wrong client.
https://exchange.xforce.ibmcloud.com/vulnerabilities/13552
http://www.securityfocus.com/bid/9504
http://www.securityfocus.com/bid/8926
http://www.securityfocus.com/advisories/6079
http://www.redhat.com/support/errata/RHSA-2003-320.html
http://security.gentoo.org/glsa/glsa-200310-04.xml
http://marc.info/?l=bugtraq&m=106761802305141&w=2
http://distro.conectiva.com.br/atualizacoes/?id=a&anuncio=000775