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High ALSA-2026:26455 1 CVE

Important: 389-ds-base security, bug fix, and enhancement update

Published Jun 17, 2026 · Updated Oct 29, 2026

Summary

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: unbounded LDAP controls count in get_ldapmessage_controls_ext() causes CPU and heap amplification (remote DoS) (CVE-2026-9064)

Bug Fix(es) and Enhancement(s):

* Getting "build_candidate_list - Database error 11" messages after migrating to LMDB. [almalinux-9.8.z] (JIRA:AlmaLinux-152356)
* Web console doesn't show the sub suffix of ou=foo,ou=people,dc=example,dc=com. [almalinux-9.8.z] (JIRA:AlmaLinux-168967)
* DS 12 does not handle escape char in bind user [almalinux-9.8.z] (JIRA:AlmaLinux-170269)
* [RFE] Add OS-level thread names to all server threads [almalinux-9.8.z] (JIRA:AlmaLinux-174524)
* Online export is failing when using the option "-s" [almalinux-9.8.z] (JIRA:AlmaLinux-180716)
* Server shutdown during online reindex may lead to data loss [almalinux-9.8.z] (JIRA:AlmaLinux-183895)

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.

Fixed packages 5

ReleasePackageFixed in
AlmaLinux · 9 389-ds-base 2.8.0-7.el9_8
AlmaLinux · 9 389-ds-base-devel 2.8.0-7.el9_8
AlmaLinux · 9 389-ds-base-libs 2.8.0-7.el9_8
AlmaLinux · 9 389-ds-base-snmp 2.8.0-7.el9_8
AlmaLinux · 9 python3-lib389 2.8.0-7.el9_8

Vulnerabilities 1

References

  • report
    https://access.redhat.com/security/cve/CVE-2026-9064
  • report
    https://bugzilla.redhat.com/2480093
  • advisory
    https://errata.almalinux.org/9/ALSA-2026-26455.html