CVE-2026-103880CWE-405

CVE-2026-103880

High · published October 2, 2026

CVSS v3.1
7.5
EPSS
0%
Percentile
41.0
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
7.5 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS v4.0
Not supplied
EPSS
0.00488 · 41.0th percentile
Weakness
CWE-405 · Asymmetric Resource Consumption (Amplification)
Published
2026-10-02T14:17Z
References (2)
https://lists.apache.org/thread.html/39q63m54v9go6xj7pqj7q18c3szn9go4 · [email protected]http://www.openwall.com/lists/oss-security/2026/10/02/7 · af854a3a-2127-422b-91ae-364da2661108
EPSS history
Timeline
  • 04 OCT 03:27Z
    EPSS moved — → 0%
    epss
  • 02 OCT 10:03Z
    Apache Directory LDAP API: Denial of service via excessive bcrypt cost factor in stored passwords
    cvelistv5