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.
History

Mon, 05 Oct 2026 19:30:00 +0000

Type Values Removed Values Added
Metrics cvssV3_1

{'score': 7.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H'}

ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Fri, 02 Oct 2026 22:30:00 +0000

Type Values Removed Values Added
References

Fri, 02 Oct 2026 14:30:00 +0000

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First Time appeared Apache
Apache directory Ldap Api
Vendors & Products Apache
Apache directory Ldap Api

Fri, 02 Oct 2026 10:15:00 +0000

Type Values Removed Values Added
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.
Title Apache Directory LDAP API: Denial of service via excessive bcrypt cost factor in stored passwords
Weaknesses CWE-405
References

cve-icon MITRE

Status: PUBLISHED

Assigner: apache

Published: 2026-10-02T10:03:48.296Z

Updated: 2026-10-05T18:47:17.198Z

Reserved: 2026-10-01T13:05:10.819Z

Link: CVE-2026-103880

cve-icon Vulnrichment

Updated: 2026-10-02T21:07:23.392Z

cve-icon NVD

Status : Deferred

Published: 2026-10-02T10:17:06.700

Modified: 2026-10-05T19:17:14.160

Link: CVE-2026-103880

cve-icon Redhat

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