An issue was discovered in Webmin 2.021. A Cross-Site Scripting (XSS) vulnerability was discovered in the HTTP Tunnel functionality when handling third-party domain URLs. By providing a crafted URL from a third-party domain, an attacker can inject malicious code. leading to the execution of arbitrary JavaScript code within the context of the victim's browser.
https://webmin.com/tags/webmin-changelog/
https://github.com/jaysharma786/Webmin-2.021/blob/main/CVE-2023-38308