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.
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No vendor fix or workaround currently provided.
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Wed, 30 Sep 2026 15:30:00 +0000
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Wed, 30 Sep 2026 13:15:00 +0000
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Apache
Apache mina Sshd |
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Apache mina Sshd |
Wed, 30 Sep 2026 11:30:00 +0000
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Wed, 30 Sep 2026 10:00:00 +0000
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| Description | 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. | |
| Title | Apache MINA SSHD: Repeated-publickey policy bypass on server | |
| Weaknesses | CWE-304 | |
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| Metrics |
cvssV3_1
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Status: PUBLISHED
Assigner: apache
Published:
Updated: 2026-09-30T14:29:38.124Z
Reserved: 2026-09-19T12:21:52.758Z
Link: CVE-2026-93994
Updated: 2026-09-30T10:14:09.612Z
Status : Awaiting Analysis
Published: 2026-09-30T10:17:17.460
Modified: 2026-09-30T16:13:13.493
Link: CVE-2026-93994
No data.
OpenCVE Enrichment
Updated: 2026-09-30T13:00:14Z