CVE-2026-76560

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

HIGH
7.5
CVSS Score
Published: September 7, 2026 at 01:18 PM UTC
Updated: October 8, 2026 at 03:17 PM UTC
2 products affected across 1 vendorEnterprise LinuxDirectory Server

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Severity
HIGH7.5
Exploit prediction
EPSS 0.6%
SSVC
No known exploit

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

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

All versions11
Vendor states this is fixed in 13 (unaffected)
Vendor states this is fixed in 1788851765 (unaffected)
Vendor states this is fixed in 8060020260908152739.0ca98e7e (unaffected)
Vendor states this is fixed in 8080020260903102346.f969626e (unaffected)
Vendor states this is fixed in 8100020260904171440.37ed7c03 (unaffected)
Vendor states this is fixed in 9020020260903155914.1674d574 (unaffected)
Vendor states this is fixed in 9040020260903102623.1674d574 (unaffected)
All versions8
Vendor states this is fixed in 0:1.3.11.1-15.el7_9 (unaffected)
Vendor states this is fixed in 0:2.2.4-22.el9_2 (unaffected)
Vendor states this is fixed in 0:2.4.5-29.el9_4 (unaffected)
Vendor states this is fixed in 0:2.6.1-24.el9_6 (unaffected)
Vendor states this is fixed in 0:2.8.0-10.el9_8 (unaffected)
Vendor states this is fixed in 0:3.0.6-21.el10_0 (unaffected)
Vendor states this is fixed in 0:3.2.0-10.el10_2 (unaffected)
Vendor states this is fixed in 8040020260901171549.96015a92 (unaffected)
Vendor states this is fixed in 8060020260901145727.824efc52 (unaffected)
Vendor states this is fixed in 8080020260831180218.6dbb3803 (unaffected)
Vendor states this is fixed in 8100020260904155442.25e700aa (unaffected)
Vendor states this is fixed in 6 (unknown)

References (19)

VDB Entryx_refsource_REDHAT
Source: cverecord
https://access.redhat.com/security/cve/CVE-2026-76560
Issue Trackingx_refsource_REDHAT
Source: cverecord
https://bugzilla.redhat.com/show_bug.cgi?id=2519521
Vendor Advisoryx_refsource_REDHAT
Source: cverecord
https://access.redhat.com/errata/RHSA-2026:64771
Vendor Advisoryx_refsource_REDHAT
Source: cverecord
https://access.redhat.com/errata/RHSA-2026:64776
Vendor Advisoryx_refsource_REDHAT
Source: cverecord
https://access.redhat.com/errata/RHSA-2026:64778
Vendor Advisoryx_refsource_REDHAT
Source: cverecord
https://access.redhat.com/errata/RHSA-2026:64779
Vendor Advisoryx_refsource_REDHAT
Source: cverecord
https://access.redhat.com/errata/RHSA-2026:64781
Vendor Advisoryx_refsource_REDHAT
Source: cverecord
https://access.redhat.com/errata/RHSA-2026:64789

SSVC — Action Prioritization

SSVCNo known exploitAutomatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

7.5HIGHredhat
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
HIGH
Availability
NONE
Vector?

Quick Info

StatusAWAITING ANALYSIS
CWE
CWE-863

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