CVE-2026-103880 — Apache Directory LDAP API: Denial of service via excessive bcrypt cost factor in stored passwords

Description (CNA)

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.

Affected (CNA)

Vendor / product	Versions
Apache Software Foundation / Apache Directory LDAP API	affected 2.1.0 before 2.1.9

CWE

CWE-405

References

https://lists.apache.org/thread.html/39q63m54v9go6xj7pqj7q18c3szn9go4

ADP enrichment

CVE

No English description supplied.

http://www.openwall.com/lists/oss-security/2026/10/02/7

CISA-ADP

No English description supplied.

No references supplied.