Altn mdaemon webmail 20.0.0 contact name stored cross site scripting (xss) Vulnerability / Exploit

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Exploits / Vulnerability Discovered : 2021-02-08 | Type : webapps | Platform : windows
This exploit / vulnerability Altn mdaemon webmail 20.0.0 contact name stored cross site scripting (xss) is for educational purposes only and if it is used you will do on your own risk!

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# Exploit Title: Alt-N MDaemon webmail 20.0.0 - 'Contact name' Stored Cross Site Scripting (XSS)
# Date: 2020-08-25
# Exploit Author: Kailash Bohara
# Vendor Homepage: https://www.altn.com/
# Version: Mdaemon webmail < 20.0.0
# CVE : 2020-18724

1. Go to contact section and distribution list menu. Create a new distribution list.
2. Contact name field is vulnerabile to XSS. Use the payload <img src=x onerror=alert(1)>
3. We can see execution code and after saving it, each time we visits the distribution list section the XSS pop-up is seen.