An issue was discovered in Webmin 2.021. A Stored Cross-Site Scripting (XSS) vulnerability was discovered in the Users and Groups functionality, allowing an attacker to store a malicious payload in the Group Name field when creating a new group.
https://webmin.com/tags/webmin-changelog/
https://github.com/jaysharma786/Webmin-2.021/blob/main/CVE-2023-38304