CVE-2026-11790: Red Hat 389 Directory Server

Medium severity, CVSS 4.9. EPSS: 0.3% chance of exploitation in the next 30 days.

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.

Affected products

• Red Hat 389 Directory Server: version 1.3.6.0 only
• Red Hat Directory Server: version 11.0 only; version 12.0 only; version 13.0 only
• Red Hat Enterprise Linux: version 7.0 only; version 8.0 only; version 9.0 only; version 10.0 only

Published 2026-06-09. Last modified 2026-07-23.