CVE-2026-18651

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.

• CWE-287

• https://access.redhat.com/security/cve/CVE-2026-18651Vendor Advisory
• https://bugzilla.redhat.com/show_bug.cgi?id=2510617Issue Tracking, Vendor Advisory

Published

Aug 3, 2026

Last Modified

Aug 9, 2026

Status

Analyzed

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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