Cross-site scripting vulnerabilities in Mailman before 2.0.11 allow remote attackers to execute script via (1) the admin login page, or (2) the Pipermail index summaries.
https://euvd.enisa.europa.eu/vulnerability/EUVD-2002-0385
http://www.securityfocus.com/bid/4826
http://mail.python.org/pipermail/mailman-announce/2002-May/000042.html