{"id":"CVE-2026-57915","aliases":["EUVD-2026-39650","GHSA-262p-fj3f-xh7v"],"status":"published","title":"Apache Kerby: Kerberos Pre-Authentication Bypass","description":"It is possible to bypass the Kerberos pre-authentication check in Apache Kerby by sending a PA-DATA with an unrecognized or unsupported type. Users are recommended to upgrade to version 2.1.2, which fixes this issue.","severity":{"version":"3.1","score":7.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L","level":"high","assessor":"adp","from":"cve"},"epss":{"day":"2026-11-08","score":0.00526,"percentile":0.44807,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-304","CWE-358"],"published":"2026-06-26T12:09:54Z","modified":"2026-11-03T22:15:11Z","fixes":[{"ecosystem":"Maven","package":"org.apache.kerby:kerb-server","fixed_in":["2.1.2"],"sources":["ghsa","osv"]}],"affected":[{"source":"ghsa","ecosystem":"Maven","package":"org.apache.kerby:kerb-server","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.1.2"}]}]},{"source":"osv","ecosystem":"Maven","package":"org.apache.kerby:kerb-server","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.1.2"}]}],"versions":["1.0.0","1.0.0-RC1","1.0.0-RC2","1.0.1","1.1.0","1.1.1","2.0.0","2.0.1","2.0.2","2.0.3","2.1.0","2.1.1"]}],"products":[{"vendor":"apache software foundation","product":"apache kerby"},{"vendor":"red hat","product":"red hat amq clients"},{"vendor":"red hat","product":"red hat data grid 8"},{"vendor":"red hat","product":"red hat fuse 7"},{"vendor":"red hat","product":"red hat jboss enterprise application platform expansion pack"},{"vendor":"red hat","product":"streams for apache kafka 2"},{"vendor":"red hat","product":"streams for apache kafka 3"}],"references":[{"url":"https://lists.apache.org/thread/1y3glgh3kzwoxo5m2lq504cjlh1dsrfh","tags":["vendor-advisory","web"]},{"url":"http://www.openwall.com/lists/oss-security/2026/06/26/8","tags":["web"]},{"url":"https://access.redhat.com/security/cve/CVE-2026-57915","tags":["vdb-entry","x_refsource_REDHAT","web"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2493407","tags":["issue-tracking","x_refsource_REDHAT","web"]},{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-57915.json","tags":["x_sadp-csaf-vex","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-57915","tags":["advisory"]},{"url":"https://github.com/apache/directory-kerby/commit/995fa59fac53f8e2e6fb987e0e29a5ae3a4bbf38","tags":["web"]},{"url":"https://github.com/apache/directory-kerby/releases/tag/kerby-all-2.1.2","tags":["web"]},{"url":"https://github.com/advisories/GHSA-262p-fj3f-xh7v"},{"url":"https://github.com/apache/directory-kerby","tags":["package"]}],"sources":{"cve":[{"id":"CVE-2026-57915","title":"Apache Kerby: Kerberos Pre-Authentication Bypass","description":"It is possible to bypass the Kerberos pre-authentication check in Apache Kerby by sending a PA-DATA with an unrecognized or unsupported type. Users are recommended to upgrade to version 2.1.2, which fixes this issue.","status":"published","published":"2026-06-26T12:09:54.85Z","modified":"2026-08-03T12:05:45.937Z","cvss":[{"version":"3.1","score":7.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L","level":"high","assessor":"adp"},{"version":"3.1","score":7.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L","level":"high","assessor":"adp"}],"cwes":["CWE-304","CWE-358"],"updated_at":"2026-11-02T13:43:56.024247Z"}],"euvd":[{"id":"EUVD-2026-39650","description":"It is possible to bypass the Kerberos pre-authentication check in Apache Kerby by sending a PA-DATA with an unrecognized or unsupported type. Users are recommended to upgrade to version 2.1.2, which fixes this issue.","status":"published","published":"2026-06-26T12:09:54Z","modified":"2026-08-03T12:05:45Z","cvss":[{"version":"3.1","score":7.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L","level":"high"}],"updated_at":"2026-11-02T18:02:24.819631Z"}],"ghsa":[{"id":"GHSA-262p-fj3f-xh7v","title":"Apache Kerby has a bypass the Kerberos pre-authentication check","description":"It is possible to bypass the Kerberos pre-authentication check in Apache Kerby by sending a PA-DATA with an unrecognized or unsupported type. Users are recommended to upgrade to version 2.1.2, which fixes this issue.","status":"published","published":"2026-06-26T15:32:13Z","modified":"2026-11-03T22:01:13Z","cvss":[{"version":"3.1","score":7.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L","level":"high"}],"cwes":["CWE-304","CWE-358"],"updated_at":"2026-11-03T22:58:54.578808Z"}],"nvd":[{"id":"CVE-2026-57915","description":"It is possible to bypass the Kerberos pre-authentication check in Apache Kerby by sending a PA-DATA with an unrecognized or unsupported type. Users are recommended to upgrade to version 2.1.2, which fixes this issue.","status":"published","published":"2026-06-26T13:16:35.74Z","modified":"2026-10-25T22:10:00.15Z","cvss":[{"version":"3.1","score":7.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L","level":"high","assessor":"secondary"},{"version":"3.1","score":7.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L","level":"high","assessor":"secondary"}],"cwes":["CWE-304","CWE-358"],"updated_at":"2026-11-02T14:12:26.045561Z"}],"osv":[{"id":"GHSA-262p-fj3f-xh7v","title":"Apache Kerby has a bypass the Kerberos pre-authentication check","description":"It is possible to bypass the Kerberos pre-authentication check in Apache Kerby by sending a PA-DATA with an unrecognized or unsupported type. Users are recommended to upgrade to version 2.1.2, which fixes this issue.","status":"published","published":"2026-06-26T15:32:13Z","modified":"2026-11-03T22:15:11.308514281Z","cvss":[{"version":"3.1","score":7.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L","level":"high"}],"cwes":["CWE-304","CWE-358"],"updated_at":"2026-11-03T22:59:30.419462Z"}]}}