Vulnerability DatabaseCVE-2026-49243
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CVE-2026-49243
Published:September 29, 2026
Updated:October 15, 2026
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 Packages
https://github.com/webmin/webmin.git (GITHUB):
Affected version(s) >=2.600 <2.650
Fix Suggestion:
Update to version 2.650
Related Resources (6)
https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/49xxx/CVE-2026-49243.json
https://nvd.nist.gov/vuln/detail/CVE-2026-49243
https://github.com/webmin/webmin/releases/tag/2.650
https://github.com/webmin/webmin/commit/2d016751399ed0f4159e72a6cbcd63694a84dabf
https://beaksec.github.io/posts/webmin-one-click-rce-via-xss
https://github.com/webmin/webmin/security/advisories/GHSA-hv4w-p8jq-2rp5
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CVSS v4
Base Score:
9.4
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
NONE
User Interaction
PASSIVE
Vulnerable System Confidentiality
HIGH
Vulnerable System Integrity
HIGH
Vulnerable System Availability
HIGH
Subsequent System Confidentiality
HIGH
Subsequent System Integrity
HIGH
Subsequent System Availability
HIGH
CVSS v3
Base Score:
9.6
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Weakness Type (CWE)
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CWE-79
EPSS
Base Score:
0.30