Public vulnerability disclosure
CVE-2026-76560
389-ds-base: 389-ds: anonymous ldap client can defeat selfdn aci bind-rule checks via empty bind dn
publishedCWE-863
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.
Technical severity7.5 highCVSS 3.1 · CNA: redhat
Published2026-09-07Source updated 2026-11-04
Collected2026-11-052 attributed sources
Fixes and workarounds
Workaround
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.
Source: CNA: redhatAffected products and versions
| Product | Versions | Authority |
|---|---|---|
| Red Hat Directory Server 11.5 E4S for RHEL 8 Red Hat redhat-ds:11
https://access.redhat.com/downloads/content/package-browser/ |
≥ 8060020260908152739.0ca98e7e; < * (unaffected, rpm)
Other versions: affected |
CNA: redhat |
| Red Hat Directory Server 11.7 E4S for RHEL 8 Red Hat redhat-ds:11
https://access.redhat.com/downloads/content/package-browser/ |
≥ 8080020260903102346.f969626e; < * (unaffected, rpm)
Other versions: affected |
CNA: redhat |
| Red Hat Directory Server 11.9 for RHEL 8 Red Hat redhat-ds:11
https://access.redhat.com/downloads/content/package-browser/ |
≥ 8100020260904171440.37ed7c03; < * (unaffected, rpm)
Other versions: affected |
CNA: redhat |
| Red Hat Directory Server 12.2 E4S for RHEL 9 Red Hat redhat-ds:12
https://access.redhat.com/downloads/content/package-browser/ |
≥ 9020020260903155914.1674d574; < * (unaffected, rpm)
Other versions: affected |
CNA: redhat |
| Red Hat Directory Server 12.4 E4S for RHEL 9 Red Hat redhat-ds:12
https://access.redhat.com/downloads/content/package-browser/ |
≥ 9040020260903102623.1674d574; < * (unaffected, rpm)
Other versions: affected |
CNA: redhat |
| Red Hat Enterprise Linux 10 Red Hat 389-ds-base
https://access.redhat.com/downloads/content/package-browser/ |
≥ 0:3.2.0-10.el10_2; < * (unaffected, rpm)
Other versions: affected |
CNA: redhat |
| Red Hat Enterprise Linux 10.0 Extended Update Support Red Hat 389-ds-base
https://access.redhat.com/downloads/content/package-browser/ |
≥ 0:3.0.6-21.el10_0; < * (unaffected, rpm)
Other versions: affected |
CNA: redhat |
| Red Hat Enterprise Linux 7 Extended Lifecycle Support Red Hat 389-ds-base
https://access.redhat.com/downloads/content/package-browser/ |
≥ 0:1.3.11.1-15.el7_9; < * (unaffected, rpm)
Other versions: affected |
CNA: redhat |
| Red Hat Enterprise Linux 8 Red Hat 389-ds:1.4
https://access.redhat.com/downloads/content/package-browser/ |
≥ 8100020260904155442.25e700aa; < * (unaffected, rpm)
Other versions: affected |
CNA: redhat |
| Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support Red Hat 389-ds:1.4
https://access.redhat.com/downloads/content/package-browser/ |
≥ 8040020260901171549.96015a92; < * (unaffected, rpm)
Other versions: affected |
CNA: redhat |
| Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On Red Hat 389-ds:1.4
https://access.redhat.com/downloads/content/package-browser/ |
≥ 8040020260901171549.96015a92; < * (unaffected, rpm)
Other versions: affected |
CNA: redhat |
| Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support Red Hat 389-ds:1.4
https://access.redhat.com/downloads/content/package-browser/ |
≥ 8060020260901145727.824efc52; < * (unaffected, rpm)
Other versions: affected |
CNA: redhat |
| Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On Red Hat 389-ds:1.4
https://access.redhat.com/downloads/content/package-browser/ |
≥ 8060020260901145727.824efc52; < * (unaffected, rpm)
Other versions: affected |
CNA: redhat |
| Red Hat Enterprise Linux 8.8 Telecommunications Update Service Red Hat 389-ds:1.4
https://access.redhat.com/downloads/content/package-browser/ |
≥ 8080020260831180218.6dbb3803; < * (unaffected, rpm)
Other versions: affected |
CNA: redhat |
| Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions Red Hat 389-ds:1.4
https://access.redhat.com/downloads/content/package-browser/ |
≥ 8080020260831180218.6dbb3803; < * (unaffected, rpm)
Other versions: affected |
CNA: redhat |
| Red Hat Enterprise Linux 9 Red Hat 389-ds-base
https://access.redhat.com/downloads/content/package-browser/ |
≥ 0:2.8.0-10.el9_8; < * (unaffected, rpm)
Other versions: affected |
CNA: redhat |
| Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions Red Hat 389-ds-base
https://access.redhat.com/downloads/content/package-browser/ |
≥ 0:2.2.4-22.el9_2; < * (unaffected, rpm)
Other versions: affected |
CNA: redhat |
| Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions Red Hat 389-ds-base
https://access.redhat.com/downloads/content/package-browser/ |
≥ 0:2.4.5-29.el9_4; < * (unaffected, rpm)
Other versions: affected |
CNA: redhat |
| Red Hat Enterprise Linux 9.6 Extended Update Support Red Hat 389-ds-base
https://access.redhat.com/downloads/content/package-browser/ |
≥ 0:2.6.1-24.el9_6; < * (unaffected, rpm)
Other versions: affected |
CNA: redhat |
| Red Hat Directory Server 13.2 Red Hat dirsrv/dirsrv-container-rhel10
https://catalog.redhat.com/software/containers/ |
≥ 1788851765; < * (unaffected, rpm)
Other versions: affected |
CNA: redhat |
| Red Hat Directory Server 11 Red Hat 389-ds-base
https://access.redhat.com/downloads/content/package-browser/ |
Range not reported
Other versions: affected |
CNA: redhat |
| Red Hat Directory Server 12 Red Hat 389-ds-base
https://access.redhat.com/downloads/content/package-browser/ |
Range not reported
Other versions: affected |
CNA: redhat |
| Red Hat Directory Server 12 Red Hat redhat-ds:12/389-ds-base
https://access.redhat.com/downloads/content/package-browser/ |
Range not reported
Other versions: affected |
CNA: redhat |
| Red Hat Directory Server 13 Red Hat 389-ds-base
https://access.redhat.com/downloads/content/package-browser/ |
Range not reported
Other versions: unaffected |
CNA: redhat |
| Red Hat Enterprise Linux 6 Red Hat 389-ds-base
https://access.redhat.com/downloads/content/package-browser/ |
Range not reported
Other versions: unknown |
CNA: redhat |
| Red Hat Enterprise Linux 8 Red Hat 389-ds-base
https://access.redhat.com/downloads/content/package-browser/ |
Range not reported
Other versions: affected |
CNA: redhat |
Version ranges are source assertions. Check the vendor advisory and your installed configuration before determining exposure.
CVSS assessments
| Version / score | Vector | Authority |
|---|---|---|
| 3.1 / 7.5 high |
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N | CNA: redhat |
Exploit evidence
No exploit evidence in collected sources. This is not proof of no exploitation.
References
- https://access.redhat.com/errata/RHSA-2026:64771CNA: redhat · vendor-advisory, x_refsource_REDHAT
- https://access.redhat.com/errata/RHSA-2026:64776CNA: redhat · vendor-advisory, x_refsource_REDHAT
- https://access.redhat.com/errata/RHSA-2026:64778CNA: redhat · vendor-advisory, x_refsource_REDHAT
- https://access.redhat.com/errata/RHSA-2026:64779CNA: redhat · vendor-advisory, x_refsource_REDHAT
- https://access.redhat.com/errata/RHSA-2026:64780CNA: redhat · vendor-advisory, x_refsource_REDHAT
- https://access.redhat.com/errata/RHSA-2026:64781CNA: redhat · vendor-advisory, x_refsource_REDHAT
- https://access.redhat.com/errata/RHSA-2026:64783CNA: redhat · vendor-advisory, x_refsource_REDHAT
- https://access.redhat.com/errata/RHSA-2026:64784CNA: redhat · vendor-advisory, x_refsource_REDHAT
- https://access.redhat.com/errata/RHSA-2026:64785CNA: redhat · vendor-advisory, x_refsource_REDHAT
- https://access.redhat.com/errata/RHSA-2026:64789CNA: redhat · vendor-advisory, x_refsource_REDHAT
- https://access.redhat.com/errata/RHSA-2026:64790CNA: redhat · vendor-advisory, x_refsource_REDHAT
- https://access.redhat.com/errata/RHSA-2026:64791CNA: redhat · vendor-advisory, x_refsource_REDHAT
- https://access.redhat.com/errata/RHSA-2026:64792CNA: redhat · vendor-advisory, x_refsource_REDHAT
- https://access.redhat.com/errata/RHSA-2026:64793CNA: redhat · vendor-advisory, x_refsource_REDHAT
- https://access.redhat.com/errata/RHSA-2026:64804CNA: redhat · vendor-advisory, x_refsource_REDHAT
- https://access.redhat.com/errata/RHSA-2026:65119CNA: redhat · vendor-advisory, x_refsource_REDHAT
- https://access.redhat.com/errata/RHSA-2026:79217CNA: redhat · vendor-advisory, x_refsource_REDHAT
- https://access.redhat.com/security/cve/CVE-2026-76560CNA: redhat · vdb-entry, x_refsource_REDHAT
- https://bugzilla.redhat.com/show_bug.cgi?id=2519521CNA: redhat · issue-tracking, x_refsource_REDHAT
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