{"id":"CVE-2026-103880","aliases":["DEBIAN-CVE-2026-103880","EUVD-2026-91359","GHSA-q4px-5x5j-5p92","UBUNTU-CVE-2026-103880"],"status":"published","title":"Apache Directory LDAP API: Denial of service via excessive bcrypt cost factor in stored passwords","description":"Asymmetric Resource Consumption vulnerability in Apache Directory LDAP API.\n\n\n\nStoring a password using the bcrypt algorithm with a high force like 30 in a LDAP server that supports this algorithm will cause the server CPU to  run for hours checking the credentials. A bounded cost should be enforced to avoid a server DOS.\n\n\n\nThis issue affects Apache Directory LDAP API: from 2.1.0 before 2.1.9.\n\n\n\nUsers are recommended to upgrade to version 2.1.9, which fixes the issue.","severity":{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"adp","from":"cve"},"epss":{"day":"2026-11-12","score":0.00433,"percentile":0.38092,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-405"],"published":"2026-10-02T10:03:48Z","modified":"2026-11-10T04:00:06Z","fixes":[{"ecosystem":"Debian:14","package":"apache-directory-api","fixed_in":["2.1.9-1"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Debian:12","package":"apache-directory-api","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.1.2-1","2.1.2-2","2.1.9-1"]},{"source":"osv","ecosystem":"Debian:13","package":"apache-directory-api","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.1.2-2","2.1.9-1"]},{"source":"osv","ecosystem":"Debian:14","package":"apache-directory-api","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.1.9-1"}]}],"versions":["2.1.2-2"]},{"source":"osv","ecosystem":"Ubuntu:16.04:LTS","package":"apache-directory-api","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.0.0~M20-3"]},{"source":"osv","ecosystem":"Ubuntu:18.04:LTS","package":"apache-directory-api","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.0.0~M20-5","1.0.0-1"]},{"source":"osv","ecosystem":"Ubuntu:20.04:LTS","package":"apache-directory-api","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.0.0-1"]},{"source":"osv","ecosystem":"Ubuntu:22.04:LTS","package":"apache-directory-api","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.0.0-2"]},{"source":"osv","ecosystem":"Ubuntu:24.04:LTS","package":"apache-directory-api","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.1.2-1"]},{"source":"osv","ecosystem":"Ubuntu:26.10","package":"apache-directory-api","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.1.2-2build1"]},{"source":"osv","ecosystem":"Ubuntu:26.04:LTS","package":"apache-directory-api","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.1.2-2","2.1.2-2build1"]}],"products":[{"vendor":"apache software foundation","product":"apache directory ldap api"}],"references":[{"url":"https://lists.apache.org/thread.html/39q63m54v9go6xj7pqj7q18c3szn9go4","tags":["vendor-advisory","report"]},{"url":"http://www.openwall.com/lists/oss-security/2026/10/02/7","tags":["report"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-103880"},{"url":"https://github.com/advisories/GHSA-q4px-5x5j-5p92"},{"url":"https://security-tracker.debian.org/tracker/CVE-2026-103880","tags":["advisory"]},{"url":"https://ubuntu.com/security/CVE-2026-103880","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-103880","tags":["report"]},{"url":"https://www.openwall.com/lists/oss-security/2026/10/02/7","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2026-103880","title":"Apache Directory LDAP API: Denial of service via excessive bcrypt cost factor in stored passwords","description":"Asymmetric Resource Consumption vulnerability in Apache Directory LDAP API.\n\n\n\nStoring a password using the bcrypt algorithm with a high force like 30 in a LDAP server that supports this algorithm will cause the server CPU to  run for hours checking the credentials. A bounded cost should be enforced to avoid a server DOS.\n\n\n\nThis issue affects Apache Directory LDAP API: from 2.1.0 before 2.1.9.\n\n\n\nUsers are recommended to upgrade to version 2.1.9, which fixes the issue.","status":"published","published":"2026-10-02T10:03:48.296Z","modified":"2026-10-05T18:47:17.198Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"adp"}],"cwes":["CWE-405"],"updated_at":"2026-11-02T13:34:48.658051Z"}],"euvd":[{"id":"EUVD-2026-91359","description":"Asymmetric Resource Consumption vulnerability in Apache Directory LDAP API.\n\n\n\nStoring a password using the bcrypt algorithm with a high force like 30 in a LDAP server that supports this algorithm will cause the server CPU to  run for hours checking the credentials. A bounded cost should be enforced to avoid a server DOS.\n\n\n\nThis issue affects Apache Directory LDAP API: from 2.1.0 before 2.1.9.\n\n\n\nUsers are recommended to upgrade to version 2.1.9, which fixes the issue.","status":"published","published":"2026-10-02T10:03:48Z","modified":"2026-10-05T18:47:17Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T17:27:39.384414Z"}],"ghsa":[{"id":"GHSA-q4px-5x5j-5p92","title":"Asymmetric Resource Consumption vulnerability in Apache Directory LDAP API.\n\n\n\nStoring a password...","description":"Asymmetric Resource Consumption vulnerability in Apache Directory LDAP API.\n\n\n\nStoring a password using the bcrypt algorithm with a high force like 30 in a LDAP server that supports this algorithm will cause the server CPU to  run for hours checking the credentials. A bounded cost should be enforced to avoid a server DOS.\n\n\n\nThis issue affects Apache Directory LDAP API: from 2.1.0 before 2.1.9.\n\n\n\nUsers are recommended to upgrade to version 2.1.9, which fixes the issue.","status":"published","published":"2026-10-02T12:31:09Z","modified":"2026-10-05T21:32:38Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"cwes":["CWE-405"],"updated_at":"2026-11-02T15:12:48.668129Z"}],"nvd":[{"id":"CVE-2026-103880","description":"Asymmetric Resource Consumption vulnerability in Apache Directory LDAP API.\n\n\n\nStoring a password using the bcrypt algorithm with a high force like 30 in a LDAP server that supports this algorithm will cause the server CPU to  run for hours checking the credentials. A bounded cost should be enforced to avoid a server DOS.\n\n\n\nThis issue affects Apache Directory LDAP API: from 2.1.0 before 2.1.9.\n\n\n\nUsers are recommended to upgrade to version 2.1.9, which fixes the issue.","status":"published","published":"2026-10-02T10:17:06.7Z","modified":"2026-10-05T19:17:14.16Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"secondary"}],"cwes":["CWE-405"],"updated_at":"2026-11-02T14:12:53.41762Z"}],"osv":[{"id":"DEBIAN-CVE-2026-103880","description":"Asymmetric Resource Consumption vulnerability in Apache Directory LDAP API.    Storing a password using the bcrypt algorithm with a high force like 30 in a LDAP server that supports this algorithm will cause the server CPU to  run for hours checking the credentials. A bounded cost should be enforced to avoid a server DOS.    This issue affects Apache Directory LDAP API: from 2.1.0 before 2.1.9.    Users are recommended to upgrade to version 2.1.9, which fixes the issue.","status":"published","published":"2026-10-02T10:17:06.7Z","modified":"2026-11-10T04:00:06.022499814Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-10T04:22:10.004764Z"},{"id":"UBUNTU-CVE-2026-103880","description":"Asymmetric Resource Consumption vulnerability in Apache Directory LDAP API. Storing a password using the bcrypt algorithm with a high force like 30 in a LDAP server that supports this algorithm will cause the server CPU to run for hours checking the credentials. A bounded cost should be enforced to avoid a server DOS. This issue affects Apache Directory LDAP API: from 2.1.0 before 2.1.9. Users are recommended to upgrade to version 2.1.9, which fixes the issue.","status":"published","published":"2026-10-02T10:17:00Z","modified":"2026-10-17T12:57:58.335947631Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T16:55:59.130573Z"}]}}