CVE-2026-56022
Webmin MFA bypass
MEDIUM
5.3
CVSS Score
Published: June 18, 2026 at 04:11 PM UTC
Updated: August 11, 2026 at 05:18 PM UTC
1 product affected across 1 vendorWebmin
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Severity
MEDIUM5.3
Exploit prediction
EPSS 0.6%
SSVC
No known exploit
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 2.641.
Remediation
No guide yetNo remediation guidance has been written for this CVE yet. What the record does show:
Patch and advisory references
References (6)
Third Party AdvisoryVDB Entry
Source: cverecord
https://raw.githubusercontent.com/cisagov/CSAF/develop/csaf_files/IT/white/2026/va-26-169-02.jsonSSVC — Action Prioritization
SSVCNo known exploitNot automatablePartial impact
SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.
CVSS
5.3MEDIUMcisa-cg
- Attack Vector
- NETWORK
- Complexity
- LOW
- Privileges
- NONE
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality
- NONE
- Integrity
- LOW
- Availability
- NONE
Vector?
Quick Info
StatusANALYZED
CWE
CWE-308
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