{"id":"CVE-2026-56624","aliases":["DEBIAN-CVE-2026-56624","EUVD-2026-46103","GHSA-j262-jh5j-p4fw","SUSE-SU-2026:3339-1","UBUNTU-CVE-2026-56624","openSUSE-SU-2026:11327-1"],"status":"published","title":"Apache MINA SSHD: SSH certificate options lack validations","description":"Improper certificate validation in Apache MINA SSHD (server-side). Apache 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).","severity":{"version":"3.1","score":7.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:N","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-11","score":0.0029,"percentile":0.21774,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-295"],"published":"2026-07-20T20:28:26Z","modified":"2026-11-10T04:00:09Z","fixes":[{"ecosystem":"Debian:14","package":"libmina-sshd-java","fixed_in":["2.19.0-1"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Debian:13","package":"libmina-sshd-java","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.13.2-2","2.13.2-3","2.19.0-1","2.20.1-1"]},{"source":"osv","ecosystem":"Debian:14","package":"libmina-sshd-java","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.19.0-1"}]}],"versions":["2.13.2-2","2.13.2-3"]},{"source":"osv","ecosystem":"SUSE:Linux Enterprise Module for Development Tools 15 SP7","package":"apache-sshd","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.19.0-150200.5.16.1"}]}],"bundled":4},{"source":"osv","ecosystem":"SUSE:Linux Enterprise High Performance Computing 15 SP4-ESPOS","package":"apache-sshd","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.19.0-150200.5.16.1"}]}],"bundled":4},{"source":"osv","ecosystem":"SUSE:Linux Enterprise High Performance Computing 15 SP4-LTSS","package":"apache-sshd","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.19.0-150200.5.16.1"}]}],"bundled":4},{"source":"osv","ecosystem":"SUSE:Linux Enterprise High Performance Computing 15 SP5-ESPOS","package":"apache-sshd","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.19.0-150200.5.16.1"}]}],"bundled":4},{"source":"osv","ecosystem":"SUSE:Linux Enterprise High Performance Computing 15 SP5-LTSS","package":"apache-sshd","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.19.0-150200.5.16.1"}]}],"bundled":4},{"source":"osv","ecosystem":"SUSE:Linux Enterprise Server 15 SP4-LTSS","package":"apache-sshd","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.19.0-150200.5.16.1"}]}],"bundled":4},{"source":"osv","ecosystem":"SUSE:Linux Enterprise Server 15 SP5-LTSS","package":"apache-sshd","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.19.0-150200.5.16.1"}]}],"bundled":4},{"source":"osv","ecosystem":"SUSE:Linux Enterprise Server 15 SP6-LTSS","package":"apache-sshd","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.19.0-150200.5.16.1"}]}],"bundled":4},{"source":"osv","ecosystem":"SUSE:Linux Enterprise Server for SAP Applications 15 SP4","package":"apache-sshd","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.19.0-150200.5.16.1"}]}],"bundled":4},{"source":"osv","ecosystem":"SUSE:Linux Enterprise Server for SAP Applications 15 SP5","package":"apache-sshd","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.19.0-150200.5.16.1"}]}],"bundled":4},{"source":"osv","ecosystem":"SUSE:Linux Enterprise Server for SAP Applications 15 SP6","package":"apache-sshd","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.19.0-150200.5.16.1"}]}],"bundled":4},{"source":"osv","ecosystem":"Ubuntu:16.04:LTS","package":"mina","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.1.7.dfsg-11"]},{"source":"osv","ecosystem":"Ubuntu:16.04:LTS","package":"mina2","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.0.7+dfsg-2","2.0.9-1","2.0.9-2"]},{"source":"osv","ecosystem":"Ubuntu:18.04:LTS","package":"mina","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.1.7.dfsg-11","1.1.7.dfsg-12"]},{"source":"osv","ecosystem":"Ubuntu:18.04:LTS","package":"mina2","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.0.16-2"]},{"source":"osv","ecosystem":"Ubuntu:20.04:LTS","package":"mina","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.1.7.dfsg-13"]},{"source":"osv","ecosystem":"Ubuntu:20.04:LTS","package":"mina2","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.0.19-2"]},{"source":"osv","ecosystem":"Ubuntu:22.04:LTS","package":"mina","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.1.7.dfsg-13"]},{"source":"osv","ecosystem":"Ubuntu:Pro:22.04:LTS","package":"mina2","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.1.4-2","2.1.5-1","2.1.5-1ubuntu0.1~esm1"]},{"source":"osv","ecosystem":"Ubuntu:24.04:LTS","package":"mina","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.1.7.dfsg-13","1.1.7.dfsg-13ubuntu1"]},{"source":"osv","ecosystem":"Ubuntu:Pro:24.04:LTS","package":"mina2","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.2.1-3","2.2.1-3ubuntu0.1~esm1"]},{"source":"osv","ecosystem":"Ubuntu:26.10","package":"mina2","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.2.1-4","2.2.1-4ubuntu1","2.2.9-1"]},{"source":"osv","ecosystem":"Ubuntu:Pro:26.04:LTS","package":"mina2","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.2.1-4","2.2.1-4ubuntu0.1~esm1"]},{"source":"osv","ecosystem":"openSUSE:Tumbleweed","package":"apache-sshd","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.19.0-2.1"}]}],"bundled":4}],"products":[{"vendor":"apache","product":"mina_sshd"},{"vendor":"apache software foundation","product":"apache mina sshd"}],"references":[{"url":"https://lists.apache.org/thread/o4c2jml522j3z80gbryqzc2f1253ltp6","tags":["vendor-advisory","Vendor Advisory","Mailing List","advisory"]},{"url":"http://www.openwall.com/lists/oss-security/2026/07/20/17","tags":["Mailing List","Third Party Advisory","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-56624","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-j262-jh5j-p4fw"},{"url":"https://repo.maven.apache.org/maven2","tags":["web"]},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/56xxx/CVE-2026-56624.json","tags":["advisory"]},{"url":"https://security-tracker.debian.org/tracker/CVE-2026-56624","tags":["advisory"]},{"url":"https://www.suse.com/support/update/announcement/2026/suse-su-20263339-1/","tags":["advisory"]},{"url":"https://bugzilla.suse.com/1271991","tags":["report"]},{"url":"https://bugzilla.suse.com/1271992","tags":["report"]},{"url":"https://bugzilla.suse.com/1271993","tags":["report"]},{"url":"https://bugzilla.suse.com/1272158","tags":["report"]},{"url":"https://www.suse.com/security/cve/CVE-2026-56452","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-56623","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-56624","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-58624","tags":["web"]},{"url":"https://ubuntu.com/security/CVE-2026-56624","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-56624","tags":["report"]},{"url":"https://www.openwall.com/lists/oss-security/2026/07/20/17","tags":["report"]},{"url":"","tags":["advisory"]}],"sources":{"cve":[{"id":"CVE-2026-56624","title":"Apache MINA SSHD: SSH certificate options lack validations","description":"Improper certificate validation in Apache MINA SSHD (server-side). Apache 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).","status":"published","published":"2026-07-20T20:28:26.333Z","modified":"2026-07-23T03:56:23.66Z","cvss":[{"version":"3.1","score":7.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:N","level":"high","assessor":"cna"}],"cwes":["CWE-295"],"updated_at":"2026-11-02T13:37:02.780526Z"}],"euvd":[{"id":"EUVD-2026-46103","description":"Improper certificate validation in Apache MINA SSHD (server-side). Apache 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).","status":"published","published":"2026-07-20T20:28:26Z","modified":"2026-07-23T03:56:23Z","cvss":[{"version":"3.1","score":7.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:N","level":"high"}],"updated_at":"2026-11-02T18:19:44.433437Z"}],"ghsa":[{"id":"GHSA-j262-jh5j-p4fw","title":"Improper certificate validation in Apache MINA SSHD (server-side). Apache MINA SSHD is a Java...","description":"Improper certificate validation in Apache MINA SSHD (server-side). Apache 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).","status":"published","published":"2026-07-20T21:31:51Z","modified":"2026-07-21T00:31:30Z","cvss":[{"version":"3.1","score":7.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:N","level":"high"}],"cwes":["CWE-295"],"updated_at":"2026-11-02T15:09:37.555146Z"}],"nvd":[{"id":"CVE-2026-56624","description":"Improper certificate validation in Apache MINA SSHD (server-side). Apache 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).","status":"published","published":"2026-07-20T21:16:49.07Z","modified":"2026-10-24T20:10:00.137Z","cvss":[{"version":"3.1","score":7.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:N","level":"high","assessor":"secondary"}],"cwes":["CWE-295"],"updated_at":"2026-11-02T14:12:31.024898Z"}],"osv":[{"id":"CVE-2026-56624","title":"Apache MINA SSHD: SSH certificate options lack validations","description":"Improper certificate validation in Apache MINA SSHD (server-side). Apache 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).","status":"published","published":"2026-07-20T20:28:26.333Z","modified":"2026-10-28T02:30:43.410886731Z","cvss":[{"version":"3.1","score":7.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:N","level":"high"}],"cwes":["CWE-295"],"updated_at":"2026-11-02T15:45:11.609219Z"},{"id":"DEBIAN-CVE-2026-56624","description":"Improper certificate validation in Apache MINA SSHD (server-side). Apache MINA SSHD is a Java library for client-side and server-side SSH.     Server-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.     This issue is fixed in Apache MINA SSHD 2.19.0 and 3.0.0-M5. Applications are advised to upgrade to these versions.     The 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).","status":"published","published":"2026-07-20T21:16:49.07Z","modified":"2026-11-10T04:00:09.575456085Z","cvss":[{"version":"3.1","score":7.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:N","level":"high"}],"updated_at":"2026-11-10T04:22:10.004764Z"},{"id":"UBUNTU-CVE-2026-56624","description":"Improper certificate validation in Apache MINA SSHD (server-side). Apache MINA SSHD is a Java library for client-side and server-side SSH. Server-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. This issue is fixed in Apache MINA SSHD 2.19.0 and 3.0.0-M5. Applications are advised to upgrade to these versions. The 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).","status":"published","published":"2026-07-20T21:16:00Z","modified":"2026-10-17T12:59:11.054298716Z","cvss":[{"version":"3.1","score":7.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:N","level":"high"}],"updated_at":"2026-11-02T16:56:41.382716Z"},{"id":"openSUSE-SU-2026:11327-1","title":"apache-sshd-2.19.0-2.1 on GA media","description":"These are all security issues fixed in the apache-sshd-2.19.0-2.1 package on the GA media of openSUSE Tumbleweed.","status":"published","published":"2026-07-22T00:00:00Z","modified":"2026-07-23T09:45:06.876889886Z","updated_at":"2026-11-02T16:58:38.95195Z"},{"id":"SUSE-SU-2026:3339-1","title":"Security update for apache-sshd","description":"This update for apache-sshd fixes the following issues:\n\nUpdate to upstream version 2.19.0.\n  \nSecurity issues fixed:\n\n- CVE-2026-56452: remote users can use SCP to send filenames that lead to arbitrary file writes due to a path traversal\n  issue in the `sshd-scp` component of Apache MINA SSHD. (bsc#1272158).\n- CVE-2026-56623: remote users can obtain access to git repositories outside of the configured server-side root\n  directory on Windows systems due to path traversal issue in `org.apache.sshd:sshd-git` (bsc#1271993).\n- CVE-2026-56624: users can authenticate with certificates containing the `force-command` option but still execute\n  other commands due to improper validation of certificate options in Apache MINA SSHD  (bsc#1271992).\n- CVE-2026-58624: remote execution of JGit commands can lead to arbitrary file writes due to improper input validation\n  in `sshd-git` of Apache MINA SSHD (bsc#1271991).\n\nOther updates and bugfixes:\n\n- Version 2.19.0:\n  * Bug Fixes\n    + GH-899 Fix ProcessShellFactory on Linux.\n    + GH-902 Fix client-side handling of sk-* public key signatures (also in the agent interfaces).\n    + Limit size of decompressed SSH packets.\n    + Improve checking SSH user certificates in public-key authentication.\n    + Improve handling of repository paths in sshd-git on Windows.\n    + Validate file names in SCP.\n    + Escape newlines in filenames in the SCP protocol.\n    + Restrict JGit commands accessible via GitPgmCommandFactory in sshd-git.\n","status":"published","published":"2026-07-28T10:03:18Z","modified":"2026-07-28T18:45:06.904689353Z","updated_at":"2026-11-02T15:54:04.987808Z"}]}}