389-ds-base: 389-ds: anonymous ldap client can defeat selfdn aci bind-rule checks via empty bind dn
Summary
| CVE | CVE-2026-76560 |
|---|---|
| State | PUBLISHED |
| Assigner | redhat |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2026-09-07 14:16:54 UTC |
| Updated | 2026-09-08 08:17:11 UTC |
| Description | A flaw was found in 389 Directory Server. The SELFDN ACI bind-rule evaluator incorrectly matches an anonymous LDAP client's empty bind DN against an empty stored attribute value, allowing an unauthenticated client to satisfy access control checks intended to require a matching authenticated identity. This can allow an anonymous LDAP client to perform an operation, such as adding or modifying a directory entry, that a SELFDN-based ACI intended to restrict to a specific authenticated user. |
Risk And Classification
Primary CVSS: v3.1 7.5 HIGH from [email protected]
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Problem Types: CWE-863 | CWE-863 Incorrect Authorization
| Version | Source | Type | Score | Severity | Vector |
|---|---|---|---|---|---|
| 3.1 | [email protected] | Secondary | 7.5 | HIGH | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N |
| 3.1 | CNA | CVSS | 7.5 | HIGH | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N |
CVSS v3.1 Breakdown
Attack Vector
NetworkAttack Complexity
LowPrivileges Required
NoneUser Interaction
NoneScope
UnchangedConfidentiality
NoneIntegrity
HighAvailability
NoneCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Vendor Declared Affected Products
| Source | Vendor | Product | Version | Platforms |
|---|---|---|---|---|
| CNA | Red Hat | Red Hat Directory Server 11.7 E4S For RHEL 8 | unaffected 8080020260903102346.f969626e * rpm | Not specified |
| CNA | Red Hat | Red Hat Directory Server 11.9 For RHEL 8 | unaffected 8100020260904171440.37ed7c03 * rpm | Not specified |
| CNA | Red Hat | Red Hat Directory Server 12.2 E4S For RHEL 9 | unaffected 9020020260903155914.1674d574 * rpm | Not specified |
| CNA | Red Hat | Red Hat Directory Server 12.4 E4S For RHEL 9 | unaffected 9040020260903102623.1674d574 * rpm | Not specified |
| CNA | Red Hat | Red Hat Enterprise Linux 10 | unaffected 0:3.2.0-10.el10_2 * rpm | Not specified |
| CNA | Red Hat | Red Hat Enterprise Linux 10.0 Extended Update Support | unaffected 0:3.0.6-21.el10_0 * rpm | Not specified |
| CNA | Red Hat | Red Hat Enterprise Linux 7 Extended Lifecycle Support | unaffected 0:1.3.11.1-15.el7_9 * rpm | Not specified |
| CNA | Red Hat | Red Hat Enterprise Linux 8 | unaffected 8100020260904155442.25e700aa * rpm | Not specified |
| CNA | Red Hat | Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support | unaffected 8040020260901171549.96015a92 * rpm | Not specified |
| CNA | Red Hat | Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On | unaffected 8040020260901171549.96015a92 * rpm | Not specified |
| CNA | Red Hat | Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support | unaffected 8060020260901145727.824efc52 * rpm | Not specified |
| CNA | Red Hat | Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On | unaffected 8060020260901145727.824efc52 * rpm | Not specified |
| CNA | Red Hat | Red Hat Enterprise Linux 8.8 Telecommunications Update Service | unaffected 8080020260831180218.6dbb3803 * rpm | Not specified |
| CNA | Red Hat | Red Hat Enterprise Linux 8.8 Update Services For SAP Solutions | unaffected 8080020260831180218.6dbb3803 * rpm | Not specified |
| CNA | Red Hat | Red Hat Enterprise Linux 9 | unaffected 0:2.8.0-10.el9_8 * rpm | Not specified |
| CNA | Red Hat | Red Hat Enterprise Linux 9.2 Update Services For SAP Solutions | unaffected 0:2.2.4-22.el9_2 * rpm | Not specified |
| CNA | Red Hat | Red Hat Enterprise Linux 9.4 Update Services For SAP Solutions | unaffected 0:2.4.5-29.el9_4 * rpm | Not specified |
| CNA | Red Hat | Red Hat Enterprise Linux 9.6 Extended Update Support | unaffected 0:2.6.1-24.el9_6 * rpm | Not specified |
| CNA | Red Hat | Red Hat Directory Server 11 | Not specified | Not specified |
| CNA | Red Hat | Red Hat Directory Server 12 | Not specified | Not specified |
| CNA | Red Hat | Red Hat Directory Server 12 | Not specified | Not specified |
| CNA | Red Hat | Red Hat Directory Server 13 | Not specified | Not specified |
| CNA | Red Hat | Red Hat Enterprise Linux 6 | Not specified | Not specified |
| CNA | Red Hat | Red Hat Enterprise Linux 8 | Not specified | Not specified |
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| access.redhat.com/errata/RHSA-2026:64781 | [email protected] | access.redhat.com | |
| access.redhat.com/errata/RHSA-2026:64778 | [email protected] | access.redhat.com | |
| access.redhat.com/errata/RHSA-2026:64779 | [email protected] | access.redhat.com | |
| access.redhat.com/errata/RHSA-2026:64780 | [email protected] | access.redhat.com | |
| access.redhat.com/errata/RHSA-2026:64783 | [email protected] | access.redhat.com | |
| access.redhat.com/errata/RHSA-2026:64776 | [email protected] | access.redhat.com | |
| access.redhat.com/errata/RHSA-2026:64784 | [email protected] | access.redhat.com | |
| access.redhat.com/errata/RHSA-2026:64793 | [email protected] | access.redhat.com | |
| access.redhat.com/errata/RHSA-2026:64771 | [email protected] | access.redhat.com | |
| access.redhat.com/errata/RHSA-2026:64792 | [email protected] | access.redhat.com | |
| access.redhat.com/errata/RHSA-2026:64804 | [email protected] | access.redhat.com | |
| access.redhat.com/errata/RHSA-2026:64785 | [email protected] | access.redhat.com | |
| access.redhat.com/errata/RHSA-2026:64789 | [email protected] | access.redhat.com | |
| bugzilla.redhat.com/show_bug.cgi | [email protected] | bugzilla.redhat.com | |
| access.redhat.com/errata/RHSA-2026:64791 | [email protected] | access.redhat.com | |
| access.redhat.com/security/cve/CVE-2026-76560 | [email protected] | access.redhat.com | |
| access.redhat.com/errata/RHSA-2026:64790 | [email protected] | access.redhat.com | |
| CVE Program record | CVE.ORG | www.cve.org | canonical |
| NVD vulnerability detail | NVD | nvd.nist.gov | canonical, analysis |
Vendor Comments And Credit
Discovery Credit
CNA: Red Hat would like to thank Gia Bui (yabeow) (Calif.io) for reporting this issue. (en)
Additional Advisory Data
| Source | Time | Event |
|---|---|---|
| CNA | 2026-08-15T16:11:15.000Z | Reported to Red Hat. |
| CNA | 2026-09-07T12:00:00.000Z | Made public. |
Workarounds
CNA: Until a fix is available, review all ACIs using userattr="...#SELFDN" bind rules and confirm the target attribute cannot be set to an empty value, or add an explicit authmethod restriction to the ACI to prevent anonymous binds from satisfying the check. Where anonymous binds are not required, disabling anonymous access to the directory removes the attack surface entirely.
There are currently no legacy QID mappings associated with this CVE.