CVE-2026-49243Webmin: Reflected XSS in the Configuration module

Description

Webmin is a web-based system administration tool for Unix-like servers. Prior to version 2.650, Webmin users who click on a malicious link to their server are vulnerable to this XSS vulnerability that could be used to execute attacker-controlled commands. This issue has been patched in version 2.650.

Data: CVE.org, NVD, CISA KEV, FIRST EPSS, Ubuntu. Published as the sources state it, in English.

Affected products and versions

References and patches

• https://github.com/webmin/webmin/security/advisories/GHSA-hv4w-p8jq-2rp5
• https://github.com/webmin/webmin/commit/2d016751399ed0f4159e72a6cbcd63694a84dabf
• https://beaksec.github.io/posts/webmin-one-click-rce-via-xss
• https://github.com/webmin/webmin/releases/tag/2.650