CVE-2026-11790 MEDIUM

CVE-2026-11790: 389-ds-base: 389-ds-base: pbkdf2 password storage plugin unbounded iteration count denial of service

Vendor Red Hat
Product Red Hat Directory Server 11
Weakness CWE-400
Published June 9, 2026
Last update June 30, 2026

CVSS base score

4.9/10
Attack vector Network
Attack complexity Low
Privileges required High
User interaction None
Confidentiality None
Integrity None

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H

What the vulnerability does

01Description

A flaw was found in 389 Directory Server. The PBKDF2-SHA256 password storage plugin does not enforce an upper bound on the iteration count extracted from stored password hashes. A privileged attacker who can modify a user's password hash can cause excessive CPU consumption during authentication, resulting in denial of service.

Key dates

02Disclosure timeline

June 9, 2026 CVE published
June 30, 2026 Record updated