RHSA-2026:55757: Important: 389-ds:1.4 security update

Published Aug 17, 2026
·
Updated

389 Directory Server is an LDAP version 3 (LDAPv3) compliant server. The base packages include the Lightweight Directory Access Protocol (LDAP) server and command-line utilities for server administration. Security Fix(es): 389-ds-base: 389-ds-base: pre-auth LDAP filter injection in CleanAllRUV status check (CVE-2026-11770) 389-ds-base: 389-ds-base: NULL pointer dereference in deref control plugin BER parser (CVE-2026-11788) 389-ds-base: 389-ds-base: pre-authentication stack buffer overflow in getruvelementfromberval() via unbounded replica ID parsing (CVE-2026-15722) For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Affected Software

14 affected componentsFixes available
Red Hat Red Hat Enterprise Linux Server - AUS
Red Hat Red Hat Enterprise Linux for x86_64 - Extended Life Cycle Long Life
redhat/389-ds-base<1.4.3.34-6.module+el8.4.0+24619+217e1084
1.4.3.34-6.module+el8.4.0+24619+217e1084
redhat/389-ds-base<1.4.3.34-6.module+el8.4.0+24619+217e1084
1.4.3.34-6.module+el8.4.0+24619+217e1084
redhat/389-ds-base-debuginfo<1.4.3.34-6.module+el8.4.0+24619+217e1084
1.4.3.34-6.module+el8.4.0+24619+217e1084
redhat/389-ds-base-debugsource<1.4.3.34-6.module+el8.4.0+24619+217e1084
1.4.3.34-6.module+el8.4.0+24619+217e1084
redhat/389-ds-base-devel<1.4.3.34-6.module+el8.4.0+24619+217e1084
1.4.3.34-6.module+el8.4.0+24619+217e1084
redhat/389-ds-base-legacy-tools<1.4.3.34-6.module+el8.4.0+24619+217e1084
1.4.3.34-6.module+el8.4.0+24619+217e1084
redhat/389-ds-base-legacy-tools-debuginfo<1.4.3.34-6.module+el8.4.0+24619+217e1084
1.4.3.34-6.module+el8.4.0+24619+217e1084
redhat/389-ds-base-libs<1.4.3.34-6.module+el8.4.0+24619+217e1084
1.4.3.34-6.module+el8.4.0+24619+217e1084
redhat/389-ds-base-libs-debuginfo<1.4.3.34-6.module+el8.4.0+24619+217e1084
1.4.3.34-6.module+el8.4.0+24619+217e1084
redhat/389-ds-base-snmp<1.4.3.34-6.module+el8.4.0+24619+217e1084
1.4.3.34-6.module+el8.4.0+24619+217e1084
redhat/389-ds-base-snmp-debuginfo<1.4.3.34-6.module+el8.4.0+24619+217e1084
1.4.3.34-6.module+el8.4.0+24619+217e1084
redhat/python3-lib389<1.4.3.34-6.module+el8.4.0+24619+217e1084
1.4.3.34-6.module+el8.4.0+24619+217e1084

Remediation

Recommended actions to resolve this vulnerability, in priority order.

  1. Upgrade

    Upgrade redhat/389-ds-base to a version that resolves this vulnerability.

    Fixed in 1.4.3.34-6.module+el8.4.0+24619+217e1084
  2. Upgrade

    Upgrade redhat/389-ds-base-debuginfo to a version that resolves this vulnerability.

    Fixed in 1.4.3.34-6.module+el8.4.0+24619+217e1084
  3. Upgrade

    Upgrade redhat/389-ds-base-debugsource to a version that resolves this vulnerability.

    Fixed in 1.4.3.34-6.module+el8.4.0+24619+217e1084
  4. Upgrade

    Upgrade redhat/389-ds-base-devel to a version that resolves this vulnerability.

    Fixed in 1.4.3.34-6.module+el8.4.0+24619+217e1084
  5. Upgrade

    Upgrade redhat/389-ds-base-legacy-tools to a version that resolves this vulnerability.

    Fixed in 1.4.3.34-6.module+el8.4.0+24619+217e1084
  6. Upgrade

    Upgrade redhat/389-ds-base-legacy-tools-debuginfo to a version that resolves this vulnerability.

    Fixed in 1.4.3.34-6.module+el8.4.0+24619+217e1084
  7. Upgrade

    Upgrade redhat/389-ds-base-libs to a version that resolves this vulnerability.

    Fixed in 1.4.3.34-6.module+el8.4.0+24619+217e1084
  8. Upgrade

    Upgrade redhat/389-ds-base-libs-debuginfo to a version that resolves this vulnerability.

    Fixed in 1.4.3.34-6.module+el8.4.0+24619+217e1084
  9. Upgrade

    Upgrade redhat/389-ds-base-snmp to a version that resolves this vulnerability.

    Fixed in 1.4.3.34-6.module+el8.4.0+24619+217e1084
  10. Upgrade

    Upgrade redhat/389-ds-base-snmp-debuginfo to a version that resolves this vulnerability.

    Fixed in 1.4.3.34-6.module+el8.4.0+24619+217e1084
  11. Upgrade

    Upgrade redhat/python3-lib389 to a version that resolves this vulnerability.

    Fixed in 1.4.3.34-6.module+el8.4.0+24619+217e1084
  12. Upgrade

    Upgrade 389-ds-base to a version that resolves this vulnerability.

    Patch CVE-2026-11770
  13. Upgrade

    Upgrade 389-ds-base to a version that resolves this vulnerability.

    Patch CVE-2026-11788
  14. Upgrade

    Upgrade 389-ds-base to a version that resolves this vulnerability.

    Patch CVE-2026-15722

Event History

Aug 17, 2026
Advisory Published
via Red Hat·12:00 AM
Data Sourced
via Red Hat·12:00 AM
RemedyDescriptionAffected Software
Advisory Published
via Red Hat·02:40 PM
Data Sourced
via Red Hat·02:40 PM
Severity
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Frequently Asked Questions

1

What is the severity of RHSA-2026:55757?

The severity of RHSA-2026:55757 is classified as high, with a score of 7.

2

How do I fix RHSA-2026:55757?

To fix RHSA-2026:55757, you need to apply the security update for the 389 Directory Server provided by Red Hat.

3

What vulnerabilities are addressed in RHSA-2026:55757?

RHSA-2026:55757 addresses a pre-auth LDAP filter injection vulnerability affecting the 389 Directory Server.

4

Which software packages are impacted by RHSA-2026:55757?

The impacted software packages include redhat/389-ds-base and several related 389 Directory Server components.

5

When was RHSA-2026:55757 published?

RHSA-2026:55757 was published on August 17, 2026.

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