Critical 9.1Published Sep 30, 2026

CVE-2026-77185Apache MINA SSHD: Asynchronous authentication can bypass signature verification

Updated under an hour ago (2026-10-19 07:00 UTC)

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It affects Apache Software Foundation Apache MINA SSHD. Add what you run to find out whether that includes you.

EPSS puts the chance of exploitation in the next 30 days at 0.51%, higher than 41% of scored CVEs.

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Every CVE for Apache Software Foundation Apache MINA SSHD

Exploited in the last 30 days

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: 9.1 CRITICAL (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
Weakness (CWE): CWE-305
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): 0.51% (percentile 41)
Assigned by: apache
NVD analysis: Awaiting Analysis
Record last updated: Sep 30, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

Apache Software Foundation Apache MINA SSHD apache_software_foundation:apache_mina_sshd (from the name)	from 2.0.0 before 2.20.0; from 3.0.0-M1 before 3.0.0-M6	CNA record

References

https://lists.apache.org/thread.html/t8pn812yq8ndokxyfxztg8tovov1284nvendor-advisory
http://www.openwall.com/lists/oss-security/2026/09/29/32

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.