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Vulnerability · Published Sep 7, 2026 · Assigned by redhat

CVE-2026-76560389-ds-base: 389-ds: anonymous ldap client can defeat selfdn aci bind-rule checks via empty bind dn

High 7.5

In plain English

A high-severity incorrect authorization in Red Hat Directory Server 11 from Red Hat. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.6% (higher than 47% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)7.5High
Exploit odds (30 days)0.6%top 53.4% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known

Official 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.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
AlmaLinux:10389-ds-base3.2.0-10.el10_2ALSA-2026:64785
AlmaLinux:8389-ds-base1.4.3.39-28.module_el8.10.0+4274+00f9a3f1ALSA-2026:64791
AlmaLinux:9389-ds-base2.8.0-10.el9_8ALSA-2026:64784
AlmaLinux:10389-ds-base-bdb3.2.0-10.el10_2ALSA-2026:64785
AlmaLinux:10389-ds-base-devel3.2.0-10.el10_2ALSA-2026:64785
AlmaLinux:8389-ds-base-devel1.4.3.39-28.module_el8.10.0+4274+00f9a3f1ALSA-2026:64791
AlmaLinux:9389-ds-base-devel2.8.0-10.el9_8ALSA-2026:64784
AlmaLinux:8389-ds-base-legacy-tools1.4.3.39-28.module_el8.10.0+4274+00f9a3f1ALSA-2026:64791
AlmaLinux:10389-ds-base-libs3.2.0-10.el10_2ALSA-2026:64785
AlmaLinux:8389-ds-base-libs1.4.3.39-28.module_el8.10.0+4274+00f9a3f1ALSA-2026:64791
AlmaLinux:9389-ds-base-libs2.8.0-10.el9_8ALSA-2026:64784
AlmaLinux:10389-ds-base-snmp3.2.0-10.el10_2ALSA-2026:64785
AlmaLinux:8389-ds-base-snmp1.4.3.39-28.module_el8.10.0+4274+00f9a3f1ALSA-2026:64791
AlmaLinux:9389-ds-base-snmp2.8.0-10.el9_8ALSA-2026:64784
AlmaLinux:10python3-lib3893.2.0-10.el10_2ALSA-2026:64785
AlmaLinux:8python3-lib3891.4.3.39-28.module_el8.10.0+4274+00f9a3f1ALSA-2026:64791
AlmaLinux:9python3-lib3892.8.0-10.el9_8ALSA-2026:64784
Debian:12389-ds-baseno fix listedDEBIAN-CVE-2026-76560
Debian:13389-ds-baseno fix listedDEBIAN-CVE-2026-76560
Rocky Linux:10389-ds-base0:3.2.0-10.el10_2RLSA-2026:64785
Rocky Linux:8389-ds-base0:1.4.3.39-28.module+el8.10.0+40311+cd962df1RLSA-2026:64791
Rocky Linux:9389-ds-base0:2.8.0-10.el9_8RLSA-2026:64784
Ubuntu:22.04:LTS389-ds-baseno fix listedUBUNTU-CVE-2026-76560
Ubuntu:24.04:LTS389-ds-baseno fix listedUBUNTU-CVE-2026-76560
Ubuntu:26.04:LTS389-ds-baseno fix listedUBUNTU-CVE-2026-76560
Ubuntu:26.10389-ds-baseno fix listedUBUNTU-CVE-2026-76560

Affected products (as reported)

VendorProductVersions
Red Hat Red Hat Directory Server 11.5 E4S for RHEL 8 see references
Red Hat Red Hat Directory Server 11.7 E4S for RHEL 8 see references
Red Hat Red Hat Directory Server 11.9 for RHEL 8 see references
Red Hat Red Hat Directory Server 12.2 E4S for RHEL 9 see references
Red Hat Red Hat Directory Server 12.4 E4S for RHEL 9 see references
Red Hat Red Hat Enterprise Linux 10 see references
Red Hat Red Hat Enterprise Linux 10.0 Extended Update Support see references
Red Hat Red Hat Enterprise Linux 7 Extended Lifecycle Support see references
Red Hat Red Hat Enterprise Linux 8 see references
Red Hat Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support see references
Red Hat Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On see references
Red Hat Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support see references
Red Hat Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On see references
Red Hat Red Hat Enterprise Linux 8.8 Telecommunications Update Service see references
Red Hat Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions see references
Red Hat Red Hat Enterprise Linux 9 see references
Red Hat Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions see references
Red Hat Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions see references
Red Hat Red Hat Enterprise Linux 9.6 Extended Update Support see references
Red Hat Red Hat Directory Server 13.2 see references
Red Hat Red Hat Directory Server 11 see references
Red Hat Red Hat Directory Server 12 see references
Red Hat Red Hat Directory Server 12 see references
Red Hat Red Hat Directory Server 13 see references
Red Hat Red Hat Enterprise Linux 6 see references
Red Hat Red Hat Enterprise Linux 8 see references

Weakness: CWE-863 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

References