CVE-2026-56020 Webmin HTTP header authentication bypass

The Webmin HTTP server miniserv.pl allows unauthenticated attackers to impersonate any user with a configured SSL client certificate by sending a forged HTTP header. A remote attacker can spoof certificate DNs and authenticate as any user. Fixed in 2.202...

CVE-2026-56020 Webmin HTTP header authentication bypass

The Webmin HTTP server miniserv.pl allows unauthenticated attackers to impersonate any user with a configured SSL client certificate by sending a forged HTTP header. A remote attacker can spoof certificate DNs and authenticate as any user. Fixed in 2.202...

CVE-2026-56021 Webmin information disclosure via regex pattern

Webmin allows unauthenticated attackers to read the contents of any file ending in .conf within module directories, due to a bypassable regex pattern...

CVE-2026-56021

Webmin allows unauthenticated attackers to read the contents of any file ending in .conf within module directories, due to a bypassable regex pattern...

CVE-2026-56021 Webmin information disclosure via regex pattern

Webmin allows unauthenticated attackers to read the contents of any file ending in .conf within module directories, due to a bypassable regex pattern...

CVE-2026-56021 Webmin information disclosure via regex pattern

Webmin allows unauthenticated attackers to read the contents of any file ending in .conf within module directories, due to a bypassable regex pattern...

EUVD-2026-37908

Webmin allows unauthenticated attackers to read the contents of any file ending in .conf within module directories, due to a bypassable regex pattern...

CVE-2026-56021

Webmin allows unauthenticated attackers to read the contents of any file ending in .conf within module directories, due to a bypassable regex pattern...

CVE-2026-56021

CVE-2026-56021 affects Webmin. An unauthenticated attacker can read contents of any .conf file in module directories because of a bypassable regex pattern, causing information disclosure (confidentiality impact: low). The CVSS metrics place it at Medium: CVSS v3.1 base score 5.3 (NETWORK, LOW com...

CVE-2026-56022 Webmin MFA bypass

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...

EUVD-2026-37907

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...

CVE-2026-56022

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...

CVE-2026-56022

CVE-2026-56022 affects Webmin. The issue allows bypass of MFA by using basic authentication without session cookies when the attacker supplies the header User-Agent: webmin, enabling MFA bypass. The vulnerability is mitigated in Webmin 2.641. "Fixed in 2.641" from the advisory. No exploit details...

CVE-2026-56022 Webmin MFA bypass

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...

CVE-2026-56022 Webmin MFA bypass

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...

Webmin multiple vulnerabilities

RISK EVALUATION Webmin contains multiple vulnerabilities. In the worst case, a remote, unauthenticated attacker could impersonate and authenticate as any user. 2. RECOMMENDED PRACTICES Update to most recent available version of Webmin. 3. DESCRIPTION The Webmin HTTP server miniserv.pl allows...

PT-2026-50713

Name of the Vulnerable Software and Affected Versions Webmin versions prior to 2.641 Description Webmin accepts basic authentication without session cookies when an attacker provides the 'User-Agent: webmin' header. This behavior allows the bypass of additional multi-factor authentication MFA...

PT-2026-50711

Name of the Vulnerable Software and Affected Versions Webmin versions prior to 2.641 Description The Webmin HTTP server miniserv.pl improperly trusts a client-supplied HTTP header for SSL client certificate identity. This allows unauthenticated remote attackers to spoof certificate distinguished...

CVE-2026-56022: Use of Single-factor Authentication

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...

PT-2026-50712

Name of the Vulnerable Software and Affected Versions Webmin affected versions not specified Description Unauthenticated attackers can read the contents of any file ending in .conf within module directories. This is caused by a bypassable regex pattern, which is a sequence of characters used to...