CVE-2026-56022

MEDIUM EPSS 22.5%
Published Jun 18, 20262w ago · Modified Jun 22, 20261w ago
6.9 CVSS 4.0
Medium
Find Similar
Published Jun 18, 2026 2w ago
Last Modified Jun 22, 2026 1w ago

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.

CVSS Details

Base Score
6.9
Exploitability
—
Impact
—
Vector string
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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope X

Threat Intelligence

EPSS Exploit Probability
22.5% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available

Weaknesses 1

CWE-308

References 4

  • github.com https://github.com/webmin/webmin/releases/tag/2.641
  • raw.githubusercontent.com https://raw.githubusercontent.com/cisagov/CSAF/develop/csaf_files/IT/white/2026/va-26-169-02.json
  • webmin.com https://webmin.com/security/#webmin-prior-to-2641
  • cve.org https://www.cve.org/CVERecord?id=CVE-2026-56022

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.