{"id":"CVE-2026-56624","revision":null,"records":[{"revision":"417f9907c5ab40789497e00df1097aa9","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-56624","aliases":[],"title":"Apache MINA SSHD: SSH certificate options lack validations","description":"Improper certificate validation in Apache MINA SSHD (server-side).\u00A0Apache MINA SSHD is a Java library for client-side and server-side SSH.\n\n\n\n\nServer-side OpenSSH user certificate validation during user authentication in an Apache MINA SSHD server did not check for the unsupported force-command or verify-required options that could be embedded in the certificate, nor did it validate these options. As a result it was possible that a user could authenticate with such a certificate that included a force-command option but still was able to execute other commands. What other command exactly would be available to the user depends on the implementation of the server.\n\n\n\n\nThis issue is fixed in Apache MINA SSHD 2.19.0 and 3.0.0-M5. Applications are advised to upgrade to these versions.\n\n\n\n\nThe fix rejects OpenSSH user certificates that include these options, since Apache MINA SSHD implements neither force-command nor sk-*-cert-v01@openssh.com user certificates (which are the only ones for which verify-required would make sense).","state":0,"publishedAt":"2026-07-20T20:28:26.333+00:00","modifiedAt":"2026-07-23T03:56:23.66+00:00","affected":[{"ecosystem":"https://repo.maven.apache.org/maven2","name":"org.apache.sshd:sshd-core","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"collectionURL\": \"https://repo.maven.apache.org/maven2\",\n                    \"defaultStatus\": \"unaffected\",\n                    \"packageName\": \"org.apache.sshd:sshd-core\",\n                    \"product\": \"Apache MINA SSHD\",\n                    \"vendor\": \"Apache Software Foundation\",\n                    \"versions\": [\n                        {\n                            \"lessThanOrEqual\": \"2.18.0\",\n                            \"status\": \"affected\",\n                            \"version\": \"2.0.0\",\n                            \"versionType\": \"maven\"\n                        },\n                        {\n                            \"lessThanOrEqual\": \"3.0.0-M4\",\n                            \"status\": \"affected\",\n                            \"version\": \"3.0.0-M1\",\n                            \"versionType\": \"maven\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:N","score":7.3,"severity":"HIGH"}],"references":["https://lists.apache.org/thread/o4c2jml522j3z80gbryqzc2f1253ltp6"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-56624","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-56624","identifiers":["CVE-2026-56624"]},"retained":false,"historicalAffected":[]}],"coverage":[{"source":"cisa-kev:global","scope":"Complete CISA KEV catalog; all vendors. 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Not a global EPSS backfill.","generation":"2026-10-26T10:13:07.6997575+00:00","complete":true,"records":1093,"lastAttemptAt":"2026-10-26T10:13:07.6997575+00:00","lastSuccessAt":"2026-10-26T10:13:07.8614935+00:00","error":null,"lastVerifiedAt":"2026-10-26T10:13:07.8614941+00:00","snapshotPublishedAt":null,"importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null},{"source":"nvd","scope":"Rolling NVD lookups of CVE aliases in current public OSV archives; 500 identifiers per refresh, rechecked after 48 hours. Not a global NVD catalog. Successful not-found lookups count as checked; they do not imply withdrawal or safety. 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