Cross-site scripting (XSS) vulnerability in the create list option in Sympa 4.1.x and earlier allows remote authenticated users to inject arbitrary web script or HTML via the description field.
https://exchange.xforce.ibmcloud.com/vulnerabilities/17057
https://euvd.enisa.europa.eu/vulnerability/EUVD-2004-1729
http://www.securityfocus.com/bid/10992