Severity: important 

Affected versions:

- Apache Directory LDAP API 2.1.0 before 2.1.9

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.

Credit:

Claude Security (tool)
The Apache Software Foundation (finder)

References:

https://directory.apache.org/
https://www.cve.org/CVERecord?id=CVE-2026-103880

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