Authentication Bypass by Primary Weakness Affecting libmina-sshd-java package, versions *


Severity

Recommended
low

Based on default assessment until relevant scores are available.

Threat Intelligence

EPSS
0.51% (41st percentile)

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  • Snyk IDSNYK-ECHOLATEST-LIBMINASSHDJAVA-20360706
  • published1 Oct 2026
  • disclosed30 Sept 2026

Introduced: 30 Sep 2026

NewCVE-2026-77185  (opens in a new tab)
CWE-305  (opens in a new tab)

How to fix?

There is no fixed version for Echo:latest libmina-sshd-java.

NVD Description

Note: Versions mentioned in the description apply only to the upstream libmina-sshd-java package and not the libmina-sshd-java package as distributed by Echo. See How to fix? for Echo:latest relevant fixed versions and status.

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 Base Scores

version 3.1