Advisory severityHigh8.1Apache Software Foundation

High [CVE-2026-93994] Apache MINA SSHD is a Java library for client-side and server-side SSH

This high-severity Apache Software Foundation advisory covers CVE-2026-93994; related products: Apache MINA SSHD.

Aggregated and source-linked by VulniPulse. Data sources, validation and limitations.

CVE-2026-93994 Source published Sep 30, 2026Source updated Sep 30, 2026

VulniPulse record published Sep 30, 2026Record updated Sep 30, 2026

CVE-2026-93994

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Summary

Apache MINA SSHD is a Java library for client-side and server-side SSH. SSH servers can be configured to require multi-authentication schemes, for instance two different public keys, not just one.

In OpenSSH, this would be done by setting in sshd_config AuthenticationMethods "publickey,publickey". Apache MINA SSHD provides an equivalent configuration mechanism.

In Apache MINA SSHD versions up to 2.19.0 and 3.0.0-M1 to 3.0.0-M5 the server code in component sshd-core does not enforce that the two public keys presented are different. A user can thus successfully authenticate with only one of the two key pairs required by presenting this single key twice.

This is a partial authentication bypass.

Users are recommended to upgrade to version 2.20.0 or 3.0.0-M6, which fix this issue.

Affected versions

2.19.0

Official advisory · high-confidence parse· fetched 6 days ago·verify at source

Fixed versions

2.20.0
3.0.0-M6

Official advisory · high-confidence parse· fetched 6 days ago·verify at source

Mitigation checklist

Recommended fix / mitigation

Users are recommended to upgrade to version 2.20.0 or 3.0.0-M6, which fix this issue.

Official advisory · high-confidence parse· fetched 6 days ago·verify at source

Sources

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Official vendor advisoryofficial
Official advisory page fetched and parsed; accepted detail fields are attributed to this page.
Apache Software Foundation
CVE.org CNA recordCVE.org
Independent CNA record used for near-real-time discovery and missed-CVE reconciliation. Discovered from the machine-readable feed https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/delta.json; this link opens the CVE.org record for CVE-2026-93994 instead of the raw feed document.
CVE Program

Cross-references

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CVE-2026-93994NVD CVE.org MITRE

Official resources

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