CVE-2026-49243

EUVD-2026-88975
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.
Cross-site Scripting
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
GitHub_MCNA
9.6 CRITICAL
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
Base Score
CVSS 3.x
EPSS Score
Percentile: 22.61%
Early Detection
Affected products identified ahead of NVD analysis through intelligence sources (CNA/ADP records, vendor advisories, Enginsight analysis).
VendorProductVersionSource
webminwebmin
𝑥
< 2.650
CNA
Common Weakness Enumeration
References
https://beaksec.github.io/posts/webmin-one-click-rce-via-xss
https://github.com/webmin/webmin/commit/2d016751399ed0f4159e72a6cbcd63694a84dabf
https://github.com/webmin/webmin/releases/tag/2.650
https://github.com/webmin/webmin/security/advisories/GHSA-hv4w-p8jq-2rp5