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DEBIAN-CVE-2026-93994

Type: advisorySource: OSV1 source record

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.

Announced Source revision 1
Original source ↗

DEBIAN-CVE-2026-93994

Primary source · Revision 1

Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.

Security context

Source reference: osv:DEBIAN-CVE-2026-93994

libmina-sshd-java

Source reference: /affected/0/package/name

Affected versions
2.13.2-2

Source reference: /affected/0/versions

2.13.2-3

Source reference: /affected/0/versions

Fixed versions
Not stated in this record
Prerequisites
Not stated in this record

libmina-sshd-java

Source reference: /affected/1/package/name

Affected versions
2.13.2-2

Source reference: /affected/1/versions

2.13.2-3

Source reference: /affected/1/versions

Fixed versions
Not stated in this record
Prerequisites
Not stated in this record

Structured affected-version data

Original package identities and version rules from this source.

[
  {
    "ranges": [
      {
        "type": "ECOSYSTEM",
        "events": [
          {
            "introduced": "0"
          }
        ]
      }
    ],
    "package": {
      "name": "libmina-sshd-java",
      "purl": "pkg:deb/debian/libmina-sshd-java?arch=source&distro=trixie",
      "ecosystem": "Debian:13"
    },
    "versions": [
      "2.13.2-2",
      "2.13.2-3"
    ],
    "database_specific": {
      "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-93994.json"
    },
    "ecosystem_specific": {
      "urgency": "not yet assigned"
    }
  },
  {
    "ranges": [
      {
        "type": "ECOSYSTEM",
        "events": [
          {
            "introduced": "0"
          }
        ]
      }
    ],
    "package": {
      "name": "libmina-sshd-java",
      "purl": "pkg:deb/debian/libmina-sshd-java?arch=source&distro=forky",
      "ecosystem": "Debian:14"
    },
    "versions": [
      "2.13.2-2",
      "2.13.2-3"
    ],
    "database_specific": {
      "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-93994.json"
    },
    "ecosystem_specific": {
      "urgency": "not yet assigned"
    }
  }
]

Publisher severity

No explicit severity was provided.

Event
#59296 · Revision 1
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Publisher date
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