CVE-2026-18651
389-ds-base: 389-ds-base: sasl plain bind installs connection credentials before account-lock check, allowing continued access as a locked account
- State
- Published
- Severity
- 5.4 Medium
- Published
- Aug 3, 2026
- Updated
- Aug 3, 2026
- Reserved
- Aug 3, 2026
Description
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 5.4 Medium | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N | redhat |
Weaknesses
- CWE-287 Improper Authentication
Affected Products
| Product | Versions |
|---|---|
Red Hat Directory Server 11Red Hat | |
Red Hat Directory Server 12Red Hat | |
Red Hat Directory Server 13Red Hat | |
Red Hat Enterprise Linux 10Red Hat | |
Red Hat Enterprise Linux 6Red Hat | |
Red Hat Enterprise Linux 7Red Hat | |
Red Hat Enterprise Linux 8Red Hat | |
Red Hat Enterprise Linux 9Red Hat |
References
- https://access.redhat.com/security/cve/CVE-2026-18651vdb-entry
- RHBZ#2510617issue-tracking
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