by Kastro
Paper/Archive/CVE-2026-49243

CVE-2026-49243

webmin webmin — Webmin: Reflected XSS in the Configuration module

EPSS 0.3%CVSS 9.6
critical.is priorityof 100
33
CVSS 9.6 (CNA)9.6 / 10 × 3028.8Not in CISA KEV+300.0EPSS percentile 22.3.223 × 204.5No public exploit+100.0SSVC exploitation: none+100.0
Description · from the CVE record

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.

Affected

ProductAffectedFixed inSource
webmin< 2.650–CNA

Scores by source

GitHub_M (CNA)9.6CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
CISA ADPSSVCExploitation: none · Automatable: no · Technical impact: partial

References

refgithub.com/webmin/webmin/security/advisories/GHSA-hv4w-p8jq-2rp5refgithub.com/webmin/webmin/commit/2d016751399ed0f4159e72a6cbcd63694a84dabfrefbeaksec.github.io/posts/webmin-one-click-rce-via-xssrefgithub.com/webmin/webmin/releases/tag/2.650