CVE-2026-56022
Webmin MFA bypass
- State
- Published
- Severity
- 6.9 Medium
- Published
- Jun 18, 2026
- Updated
- Aug 11, 2026
- Reserved
- Jun 18, 2026
Description
Webmin accepts basic authentication without session cookies when an attacker provides the 'User-Agent: webmin' header, allowing bypass of additional MFA requirements. Fixed in 2.640.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 6.9 Medium | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N | cisa-cg |
| 3.1 | 5.3 Medium | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N | cisa-cg |
Weaknesses
- CWE-308 Use of Single-factor Authentication
Affected Products
| Product | Versions |
|---|---|
WebminWebmin |
|
References
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