CVE-2026-49243

critical

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.

References

https://github.com/webmin/webmin/security/advisories/GHSA-hv4w-p8jq-2rp5

https://github.com/webmin/webmin/releases/tag/2.650

https://github.com/webmin/webmin/commit/2d016751399ed0f4159e72a6cbcd63694a84dabf

https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-88975

https://beaksec.github.io/posts/webmin-one-click-rce-via-xss

Details

Source: Mitre, NVD

Published: 2026-09-29

Updated: 2026-10-13

Risk Information

CVSS v2

Base Score: 10

Vector: CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C

Severity: Critical

CVSS v3

Base Score: 9.6

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H

Severity: Critical

EPSS

EPSS: 0.00297