Webmin is a web-based system administration tool for Unix-like servers. Prior to version 2.640, for Webmin accounts that require a second authentication factor (typically TOTP), an attacker with knowledge of the username and password can bypass the 2FA requirement by using Basic authentication. Webmin is a web-based system administration tool for Unix-like servers. As a workaround, apply the patch from commit da18a16c84ae5c0b78cad79609cb0efb174000ec manually.
History

Tue, 21 Jul 2026 00:15:00 +0000

Type Values Removed Values Added
First Time appeared Webmin
Webmin webmin
Vendors & Products Webmin
Webmin webmin

Mon, 20 Jul 2026 18:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Mon, 20 Jul 2026 17:15:00 +0000

Type Values Removed Values Added
Description Webmin is a web-based system administration tool for Unix-like servers. Prior to version 2.640, for Webmin accounts that require a second authentication factor (typically TOTP), an attacker with knowledge of the username and password can bypass the 2FA requirement by using Basic authentication. Webmin is a web-based system administration tool for Unix-like servers. As a workaround, apply the patch from commit da18a16c84ae5c0b78cad79609cb0efb174000ec manually.
Title Webmin 2FA requirement bypass
Weaknesses CWE-287
References
Metrics cvssV4_0

{'score': 5.3, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N'}


cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published: 2026-07-20T17:03:09.650Z

Updated: 2026-07-20T17:41:48.414Z

Reserved: 2026-04-25T05:04:37.028Z

Link: CVE-2026-42210

cve-icon Vulnrichment

Updated: 2026-07-20T17:41:42.542Z

cve-icon NVD

No data.

cve-icon Redhat

No data.