Authenticated stored cross-site scripting (XSS) in the contact name field in the distribution list of MDaemon webmail 19.5.5 allows an attacker to executes code and perform a XSS attack while opening a contact list.
https://www.altn.com/Support/SecurityUpdate/MD082520_MDaemon_EN/
http://packetstormsecurity.com/files/161332/Alt-N-MDaemon-Webmail-20.0.0-Cross-Site-Scripting.html
http://kailashbohara.com.np/blog/2020/07/15/mdaemon-stored-xss