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

4.9MEDIUM

Key Information:

Vendor: Red Hat
Status: Red Hat Directory Server 11; Red Hat Directory Server 12; Red Hat Directory Server 13; Red Hat Enterprise Linux 10
Vendor: CVE Published:; 9 June 2026

What is CVE-2026-11790?

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.