CVE-2026-77185

Authentication bypass in sshd-core in Apache MINA SSHD versions 2.0.0 to 2.19.0 and 3.0.0-M1 to 3.0.0-M5 for a certain (presumed rare) way to implement an SSH server. Apache MINA SSHD is a Java library for client- and server-side SSH. In the server part of the library, a mechanism to perform "asynchronous authentication" exists. A server implemented with Apache MINA SSHD must contain explicit code to make use of this feature. The implementation of this feature was flawed and could potentially lead to skipping checking the signature in public-key or hostbased authentication, or returning a wrong result. Users are recommended to upgrade to Apache MINA SSHD 2.20.0 or 3.0.0-M6, which fix the logic error and which additionally forbid the use of this "asynchronous authentication" mechanism with the public-key or hostbased authentication schemes: if used, the SSH session will be closed and the server will log an entry indicating that asynchronous authentication may be used only with password or keyboard-interactive authentication.

CVSS v3 9.1 CRITICAL

9.1^/10

CVSS v3 : CRITICAL

Vector :

Exploitability : 3.9 / Impact : 5.2

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://lists.apache.org/thread.html/t8pn812yq8ndokxyfxztg8tovov1284n
http://www.openwall.com/lists/oss-security/2026/09/29/32

Configurations

No configuration.

History

30 Sep 2026, 11:16

Type	Values Removed	Values Added
References		() http://www.openwall.com/lists/oss-security/2026/09/29/32 -

30 Sep 2026, 10:17

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-09-30 10:17

Updated : 2026-09-30 17:16

NVD link : CVE-2026-77185

Mitre link : CVE-2026-77185

CVE.ORG link : CVE-2026-77185

JSON object : View

Products Affected

No product.

CWE

CWE-305

Authentication Bypass by Primary Weakness

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