PT-2026-50713 · Webmin · Webmin

Published 2026-06-18 · Updated 2026-06-18 · CVE-2026-56022

Mitre

CVSS v3.1

5.3

Medium

Base vector

AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

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.

Fix

Weakness Enumeration

CWE-308

Related Identifiers

CVE-2026-56022

Affected Products

Webmin

References · 5

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