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

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.

Timeline

Scores

EPSS (exploitation in 30 days)

0.56% · top 53% of all CVEs (14 Nov 2026)

CISA SSVC

Exploitation: none · Automatable: yes · Technical impact: partial

The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.5.

Affected products

• Red Hat · Red Hat Directory Server 11.5 E4S for RHEL 8

  • unaffected 8060020260908152739.0ca98e7e – < *

• Red Hat · Red Hat Directory Server 11.7 E4S for RHEL 8

  • unaffected 8080020260903102346.f969626e – < *

• Red Hat · Red Hat Directory Server 11.9 for RHEL 8

  • unaffected 8100020260904171440.37ed7c03 – < *

• Red Hat · Red Hat Directory Server 12.2 E4S for RHEL 9

  • unaffected 9020020260903155914.1674d574 – < *

• Red Hat · Red Hat Directory Server 12.4 E4S for RHEL 9

  • unaffected 9040020260903102623.1674d574 – < *

• Red Hat · Red Hat Enterprise Linux 10

  • unaffected 0:3.2.0-10.el10_2 – < *

• Red Hat · Red Hat Enterprise Linux 10.0 Extended Update Support

  • unaffected 0:3.0.6-21.el10_0 – < *

• Red Hat · Red Hat Enterprise Linux 7 Extended Lifecycle Support

  • unaffected 0:1.3.11.1-15.el7_9 – < *

• Red Hat · Red Hat Enterprise Linux 8

  • unaffected 8100020260904155442.25e700aa – < *

• Red Hat · Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support

  • unaffected 8040020260901171549.96015a92 – < *

• Red Hat · Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On

  • unaffected 8040020260901171549.96015a92 – < *

• Red Hat · Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support

  • unaffected 8060020260901145727.824efc52 – < *

• Red Hat · Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On

  • unaffected 8060020260901145727.824efc52 – < *

• Red Hat · Red Hat Enterprise Linux 8.8 Telecommunications Update Service

  • unaffected 8080020260831180218.6dbb3803 – < *

• Red Hat · Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions

  • unaffected 8080020260831180218.6dbb3803 – < *

• Red Hat · Red Hat Enterprise Linux 9

  • unaffected 0:2.8.0-10.el9_8 – < *

• Red Hat · Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions

  • unaffected 0:2.2.4-22.el9_2 – < *

• Red Hat · Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions

  • unaffected 0:2.4.5-29.el9_4 – < *

• Red Hat · Red Hat Enterprise Linux 9.6 Extended Update Support

  • unaffected 0:2.6.1-24.el9_6 – < *

• Red Hat · Red Hat Directory Server 13.2

  • unaffected 1788851765 – < *

• Red Hat · Red Hat Directory Server 11

  All versions: affected

• Red Hat · Red Hat Directory Server 12

  All versions: affected

• Red Hat · Red Hat Directory Server 12

  All versions: affected

• Red Hat · Red Hat Directory Server 13

  All versions: unaffected

• Red Hat · Red Hat Enterprise Linux 6

  All versions: unknown

• Red Hat · Red Hat Enterprise Linux 8

  All versions: affected

What to do

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.

Sources

The same CVE in the primary databases and aggregators, to check against.

• CVE.org record (opens in a new tab)
• CVE List JSON (GitHub) (opens in a new tab)
• NVD (opens in a new tab)
• FIRST EPSS (opens in a new tab)
• EUVD EUVD-2026-72400 (opens in a new tab)
• OSV.dev (opens in a new tab)
• GitHub Advisories (opens in a new tab)
• CIRCL Vulnerability-Lookup (opens in a new tab)

Badge for a README or a ticket

[![CVE-2026-76560](https://cveledger.app/badge/CVE-2026-76560.svg)](https://cveledger.app/cve/CVE-2026-76560)

Record last updated 4 Nov 2026, 23:32 UTC.