CVE-2026-93994

{"id": "CVE-2026-93994", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-93994", "role": "CISA Coordinator", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "total"}], "version": "2.0.3", "timestamp": "2026-09-30T14:29:28.530614Z"}}], "cvssMetricV31": [{"type": "Secondary", "source": "security@apache.org", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 8.1, "attackVector": "NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "NONE", "privilegesRequired": "LOW", "confidentialityImpact": "HIGH"}, "impactScore": 5.2, "exploitabilityScore": 2.8}]}, "affected": [{"source": "security@apache.org", "affectedData": [{"vendor": "Apache Software Foundation", "product": "Apache MINA SSHD", "versions": [{"status": "affected", "version": "0", "lessThan": "2.20.0", "versionType": "maven"}, {"status": "affected", "version": "3.0.0-M1", "lessThan": "3.0.0-M6", "versionType": "maven"}], "packageURL": "pkg:maven/org.apache.sshd/sshd-core", "packageName": "org.apache.sshd:sshd-core", "collectionURL": "https://repo.maven.apache.org/maven2", "defaultStatus": "unaffected"}]}], "published": "2026-09-30T10:17:17.460", "references": [{"url": "https://lists.apache.org/thread.html/9t3vsm8rnvwdv9779mlg1lq2fbwojdwp", "source": "security@apache.org"}, {"url": "http://www.openwall.com/lists/oss-security/2026/09/29/33", "source": "af854a3a-2127-422b-91ae-364da2661108"}], "vulnStatus": "Awaiting Analysis", "weaknesses": [{"type": "Secondary", "source": "security@apache.org", "description": [{"lang": "en", "value": "CWE-304"}]}], "descriptions": [{"lang": "en", "value": "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.\n\n\n\n\nIn 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.\n\n\n\n\n\n\nUsers are recommended to upgrade to version 2.20.0 or 3.0.0-M6, which fix this issue."}], "lastModified": "2026-09-30T16:13:13.493", "sourceIdentifier": "security@apache.org"}