High 7.5Published Oct 2, 2026

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

Updated under an hour ago (2026-10-19 10:00 UTC)

Does this affect you?

It affects Apache Software Foundation Apache Directory LDAP API. Add what you run to find out whether that includes you.

EPSS puts the chance of exploitation in the next 30 days at 0.49%, higher than 40% of scored CVEs.

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Every CVE for Apache Software Foundation Apache Directory LDAP API

Exploited in the last 30 days

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.

CVSS: 7.5 HIGH (v3.1, CISA ADP)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness (CWE): CWE-405
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): 0.49% (percentile 40)
Assigned by: apache
NVD analysis: Deferred
Record last updated: Oct 5, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

Apache Software Foundation Apache Directory LDAP API apache_software_foundation:apache_directory_ldap_api (from the name)	from 2.1.0 before 2.1.9	CNA record

References

https://lists.apache.org/thread.html/39q63m54v9go6xj7pqj7q18c3szn9go4vendor-advisory
http://www.openwall.com/lists/oss-security/2026/10/02/7

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.