CVE-2026-42210 MEDIUM

CVE-2026-42210: Webmin 2FA requirement bypass

Vendor Webmin
Product webmin
Weakness CWE-287 · Improper authentication
Published July 20, 2026
Last update July 20, 2026

CVSS base score

5.3/10
Attack vector Network
Attack complexity Low
Privileges required Low
User interaction None
Confidentiality
Integrity

CVSS 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

What the vulnerability does

01Description

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.

Key dates

02Disclosure timeline

July 20, 2026 CVE published
July 20, 2026 Record updated

Related vulnerabilities

04Related CVE