Cross-site scripting (XSS) vulnerability in options.py for Mailman 2.1 allows remote attackers to inject script or HTML into web pages via the (1) email or (2) language parameters.
https://exchange.xforce.ibmcloud.com/vulnerabilities/11152
http://www.securitytracker.com/id?1005987
http://www.securityfocus.com/bid/6677
http://www.debian.org/security/2004/dsa-436
http://telia.dl.sourceforge.net/sourceforge/mailman/xss-2.1.0-patch.txt