RHSA-2026:55758: Important: 389-ds-base 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

19 affected componentsFixes available
Red Hat Red Hat Enterprise Linux Server - Extended Life Cycle Support for IBM Power, little endian
Red Hat Red Hat Enterprise Linux Server - Extended Life Cycle Support
Red Hat Red Hat Enterprise Linux Server - Extended Life Cycle Support (for IBM z Systems)
Red Hat Red Hat Enterprise Linux Server - Extended Life Cycle Support for IBM Power, big endian
redhat/389-ds-base<1.3.11.1-14.el7_9
1.3.11.1-14.el7_9
redhat/389-ds-base<1.3.11.1-14.el7_9
1.3.11.1-14.el7_9
redhat/389-ds-base-debuginfo<1.3.11.1-14.el7_9
1.3.11.1-14.el7_9
redhat/389-ds-base-devel<1.3.11.1-14.el7_9
1.3.11.1-14.el7_9
redhat/389-ds-base-libs<1.3.11.1-14.el7_9
1.3.11.1-14.el7_9
redhat/389-ds-base-snmp<1.3.11.1-14.el7_9
1.3.11.1-14.el7_9
redhat/389-ds-base-debuginfo<1.3.11.1-14.el7_9
1.3.11.1-14.el7_9
redhat/389-ds-base-devel<1.3.11.1-14.el7_9
1.3.11.1-14.el7_9
redhat/389-ds-base-libs<1.3.11.1-14.el7_9
1.3.11.1-14.el7_9
redhat/389-ds-base-snmp<1.3.11.1-14.el7_9
1.3.11.1-14.el7_9
redhat/389-ds-base<1.3.11.1-14.el7_9
1.3.11.1-14.el7_9
redhat/389-ds-base-debuginfo<1.3.11.1-14.el7_9
1.3.11.1-14.el7_9
redhat/389-ds-base-devel<1.3.11.1-14.el7_9
1.3.11.1-14.el7_9
redhat/389-ds-base-libs<1.3.11.1-14.el7_9
1.3.11.1-14.el7_9
redhat/389-ds-base-snmp<1.3.11.1-14.el7_9
1.3.11.1-14.el7_9

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 1.3.11.1-14.el7_9
  2. Upgrade

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

    Fixed in 1.3.11.1-14.el7_9
  3. Upgrade

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

    Fixed in 1.3.11.1-14.el7_9
  4. Upgrade

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

    Fixed in 1.3.11.1-14.el7_9
  5. Upgrade

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

    Fixed in 1.3.11.1-14.el7_9
  6. Upgrade

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

    Patch CVE-2026-11788
  7. Upgrade

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

    Patch CVE-2026-15722
  8. Upgrade

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

    Patch CVE-2026-11770

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-2026:55758?

The severity of RHSA-2026:55758 is high with a rating of 7.

2

What software is affected by RHSA-2026:55758?

RHSA-2026:55758 affects Red Hat Enterprise Linux Server in various support architectures including IBM Power and z Systems.

3

What does RHSA-2026:55758 address?

RHSA-2026:55758 addresses important security vulnerabilities in the 389-ds-base package.

4

How do I fix RHSA-2026:55758?

To fix RHSA-2026:55758, apply the available security update for 389-ds-base from Red Hat.

5

When was RHSA-2026:55758 published?

RHSA-2026:55758 was published on August 17, 2026.

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