PT-2026-67427 · Red Hat · Red Hat Directory Server 11+7

CVE-2026-18651 · Published 2026-08-03 · Updated 2026-08-03

NVD

CVSS v3.1

5.4

Medium

Base vector

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

A flaw was found in 389 Directory Server. During SASL PLAIN authentication, the server installs connection-level bind credentials before performing the account-lock check. If the account is subsequently found to be locked, the bind is reported as failed to the client, but the already-installed authenticated state on the connection is not reverted. A client that supplies valid credentials for an account that has been administratively locked can continue to use the same connection with that account's privileges, defeating account lock as an access-revocation control.

Fix

Improper Authentication

Weakness Enumeration

CWE-287

Related Identifiers

CVE-2026-18651

Affected Products

Red Hat Directory Server 11

Red Hat Directory Server 12

Red Hat Directory Server 13

Red Hat Enterprise Linux 10

Red Hat Enterprise Linux 6

Red Hat Enterprise Linux 7

Red Hat Enterprise Linux 8

Red Hat Enterprise Linux 9

References · 3

• https://nvd.nist.gov/vuln/detail/CVE-2026-18651 · Security Note
• https://bugzilla.redhat.com/show_bug.cgi?id=2510617 · Note
• https://access.redhat.com/security/cve/CVE-2026-18651 · Note