Mailman before 2.1.5 allows remote attackers to obtain user passwords via a crafted email request to the Mailman server.
https://exchange.xforce.ibmcloud.com/vulnerabilities/16256
https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=123559
http://www.securityfocus.com/bid/10412
http://www.mandrakesecure.net/en/advisories/advisory.php?name=MDKSA-2004:051
http://security.gentoo.org/glsa/glsa-200406-04.xml
http://secunia.com/advisories/11701
http://marc.info/?l=bugtraq&m=109034869927955&w=2
http://mail.python.org/pipermail/mailman-announce/2004-May/000072.html
http://distro.conectiva.com.br/atualizacoes/?id=a&anuncio=000842