CVE-2026-18453
389-ds-base: A flaw was found in 389 Directory Server
CVE-2026-18453 is fixed in 15 products on 1 platform, first by FEDORA-2026-0B8BC362B1, released September 7, 2026. It is not reported as exploited. Patch Radar priority: High.
High
CVSS
9.8
important
Exploitation
None reported
No vendor assessment
CISA KEV
Not listed
Not in the Known Exploited Vulnerabilities catalog
EPSS
0.0085
58th percentile
A flaw was found in 389 Directory Server. A missing NULL pointer check in the paged results handling of op_shared_search allows an unauthenticated remote attacker to crash the LDAP server by sending a crafted sequence of search requests using the USE_ONE_BACKEND control, resulting in denial of service.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| 389-ds · opensuse-leap 16.0 | 3.0.7~git2.2846d5288-160000.1.1 | OPENSUSE-SU-2026:21950-1 | Sep 24, 2026 |
| 389-ds · sles 15.6 | 2.2.11~git12.1e612cde2-150600.8.38.1 | SUSE-SU-2026:4929-1 | Nov 7, 2026 |
| 389-ds · sles 15.7 | 2.8.2~git10.030ada7a6-150700.3.25.1 | SUSE-SU-2026:4380-1 | Sep 28, 2026 |
| 389-ds · sles 16.0 | 3.0.7~git2.2846d5288-160000.1.1 | SUSE-SU-2026:23916-1 | Sep 24, 2026 |
| 389-ds-base · Fedora 43 | 3.1.5-4.fc43 | FEDORA-2026-0B8BC362B1 | Sep 7, 2026 |
| 389-ds-base · RHEL 10 | 3.0.6-21.el10_0 | RHSA-2026:64804 | Sep 10, 2026 |
| 389-ds-base · RHEL 8 | 0:1.4.3.39-28.module+el8.10.0+24822+205d20dc | RHSA-2026:64791 | Sep 13, 2026 |
| 389-ds-base · RHEL 9 | 0:2.8.0-10.el9_8 | RHSA-2026:64784 | Sep 13, 2026 |
| 389-ds-base · almalinux 10 | 3.2.0-10.el10_2 | ALSA-2026:64785 | Sep 8, 2026 |
| 389-ds-base · almalinux 8 | 1.4.3.39-28.module_el8.10.0+4274+00f9a3f1 | ALSA-2026:64791 | Sep 8, 2026 |
| 389-ds-base · almalinux 9 | 2.8.0-10.el9_8 | ALSA-2026:64784 | Sep 8, 2026 |
| 389-ds-base · ol 10 | 0:3.2.0-10.el10_2 | ELSA-2026-64785-0 | Sep 8, 2026 |
| 389-ds-base · ol 8 | 0:1.4.3.39-28.module+el8.10.0+91024+7bf29691 | ELSA-2026-64791-0 | Sep 10, 2026 |
| 389-ds-base · ol 9 | 0:2.8.0-10.el9_8 | ELSA-2026-64784-0 | Sep 8, 2026 |
| 389-ds-base · rocky 10 | 0:3.2.0-10.el10_2 | RLSA-2026:64785 | Sep 9, 2026 |
| 389-ds-base · rocky 8 | 0:1.4.3.39-28.module+el8.10.0+40311+cd962df1 | RLSA-2026:64791 | Sep 9, 2026 |
| 389-ds-base · rocky 9 | 0:2.8.0-10.el9_8 | RLSA-2026:64784 | Sep 9, 2026 |
| 389-ds-base-bdb · almalinux 10 | 3.2.0-10.el10_2 | ALSA-2026:64785 | Sep 8, 2026 |
| 389-ds-base-bdb · ol 10 | 0:3.2.0-10.el10_2 | ELSA-2026-64785-0 | Sep 8, 2026 |
| 389-ds-base-debuginfo · Fedora 43 | 3.1.5-4.fc43 | FEDORA-2026-0B8BC362B1 | Sep 7, 2026 |
| 389-ds-base-debugsource · Fedora 43 | 3.1.5-4.fc43 | FEDORA-2026-0B8BC362B1 | Sep 7, 2026 |
| 389-ds-base-devel · Fedora 43 | 3.1.5-4.fc43 | FEDORA-2026-0B8BC362B1 | Sep 7, 2026 |
| 389-ds-base-devel · RHEL 8 | 0:1.4.3.39-28.module+el8.10.0+24822+205d20dc | RHSA-2026:64791 | Sep 13, 2026 |
| 389-ds-base-devel · RHEL 9 | 0:2.8.0-10.el9_8 | RHSA-2026:64784 | Sep 13, 2026 |
| 389-ds-base-devel · almalinux 10 | 3.2.0-10.el10_2 | ALSA-2026:64785 | Sep 8, 2026 |
| 389-ds-base-devel · almalinux 8 | 1.4.3.39-28.module_el8.10.0+4274+00f9a3f1 | ALSA-2026:64791 | Sep 8, 2026 |
| 389-ds-base-devel · almalinux 9 | 2.8.0-10.el9_8 | ALSA-2026:64784 | Sep 8, 2026 |
| 389-ds-base-devel · ol 10 | 0:3.2.0-10.el10_2 | ELSA-2026-64785-0 | Sep 8, 2026 |
| 389-ds-base-devel · ol 8 | 0:1.4.3.39-28.module+el8.10.0+91024+7bf29691 | ELSA-2026-64791-0 | Sep 10, 2026 |
| 389-ds-base-devel · ol 9 | 0:2.8.0-10.el9_8 | ELSA-2026-64784-0 | Sep 8, 2026 |
| 389-ds-base-legacy-tools · RHEL 8 | 0:1.4.3.39-28.module+el8.10.0+24822+205d20dc | RHSA-2026:64791 | Sep 13, 2026 |
| 389-ds-base-legacy-tools · almalinux 8 | 1.4.3.39-28.module_el8.10.0+4274+00f9a3f1 | ALSA-2026:64791 | Sep 8, 2026 |
| 389-ds-base-legacy-tools · ol 8 | 0:1.4.3.39-28.module+el8.10.0+91024+7bf29691 | ELSA-2026-64791-0 | Sep 10, 2026 |
| 389-ds-base-libs · Fedora 43 | 3.1.5-4.fc43 | FEDORA-2026-0B8BC362B1 | Sep 7, 2026 |
| 389-ds-base-libs · RHEL 8 | 0:1.4.3.39-28.module+el8.10.0+24822+205d20dc | RHSA-2026:64791 | Sep 13, 2026 |
| 389-ds-base-libs · RHEL 9 | 0:2.8.0-10.el9_8 | RHSA-2026:64784 | Sep 13, 2026 |
| 389-ds-base-libs · almalinux 10 | 3.2.0-10.el10_2 | ALSA-2026:64785 | Sep 8, 2026 |
| 389-ds-base-libs · almalinux 8 | 1.4.3.39-28.module_el8.10.0+4274+00f9a3f1 | ALSA-2026:64791 | Sep 8, 2026 |
| 389-ds-base-libs · almalinux 9 | 2.8.0-10.el9_8 | ALSA-2026:64784 | Sep 8, 2026 |
| 389-ds-base-libs · ol 10 | 0:3.2.0-10.el10_2 | ELSA-2026-64785-0 | Sep 8, 2026 |
| 389-ds-base-libs · ol 8 | 0:1.4.3.39-28.module+el8.10.0+91024+7bf29691 | ELSA-2026-64791-0 | Sep 10, 2026 |
| 389-ds-base-libs · ol 9 | 0:2.8.0-10.el9_8 | ELSA-2026-64784-0 | Sep 8, 2026 |
| 389-ds-base-libs-debuginfo · Fedora 43 | 3.1.5-4.fc43 | FEDORA-2026-0B8BC362B1 | Sep 7, 2026 |
| 389-ds-base-robdb-libs · Fedora 43 | 3.1.5-4.fc43 | FEDORA-2026-0B8BC362B1 | Sep 7, 2026 |
| 389-ds-base-robdb-libs-debuginfo · Fedora 43 | 3.1.5-4.fc43 | FEDORA-2026-0B8BC362B1 | Sep 7, 2026 |
| 389-ds-base-snmp · Fedora 43 | 3.1.5-4.fc43 | FEDORA-2026-0B8BC362B1 | Sep 7, 2026 |
| 389-ds-base-snmp · RHEL 8 | 0:1.4.3.39-28.module+el8.10.0+24822+205d20dc | RHSA-2026:64791 | Sep 13, 2026 |
| 389-ds-base-snmp · RHEL 9 | 0:2.8.0-10.el9_8 | RHSA-2026:64784 | Sep 13, 2026 |
| 389-ds-base-snmp · almalinux 10 | 3.2.0-10.el10_2 | ALSA-2026:64785 | Sep 8, 2026 |
| 389-ds-base-snmp · almalinux 8 | 1.4.3.39-28.module_el8.10.0+4274+00f9a3f1 | ALSA-2026:64791 | Sep 8, 2026 |
| 389-ds-base-snmp · almalinux 9 | 2.8.0-10.el9_8 | ALSA-2026:64784 | Sep 8, 2026 |
| 389-ds-base-snmp · ol 10 | 0:3.2.0-10.el10_2 | ELSA-2026-64785-0 | Sep 8, 2026 |
| 389-ds-base-snmp · ol 8 | 0:1.4.3.39-28.module+el8.10.0+91024+7bf29691 | ELSA-2026-64791-0 | Sep 10, 2026 |
| 389-ds-base-snmp · ol 9 | 0:2.8.0-10.el9_8 | ELSA-2026-64784-0 | Sep 8, 2026 |
| 389-ds-base-snmp-debuginfo · Fedora 43 | 3.1.5-4.fc43 | FEDORA-2026-0B8BC362B1 | Sep 7, 2026 |
| cockpit-389-ds · Fedora 43 | 3.1.5-4.fc43 | FEDORA-2026-0B8BC362B1 | Sep 7, 2026 |
| python3-lib389 · Fedora 43 | 3.1.5-4.fc43 | FEDORA-2026-0B8BC362B1 | Sep 7, 2026 |
| python3-lib389 · RHEL 8 | 0:1.4.3.39-28.module+el8.10.0+24822+205d20dc | RHSA-2026:64791 | Sep 13, 2026 |
| python3-lib389 · RHEL 9 | 0:2.8.0-10.el9_8 | RHSA-2026:64784 | Sep 13, 2026 |
| python3-lib389 · almalinux 10 | 3.2.0-10.el10_2 | ALSA-2026:64785 | Sep 8, 2026 |
| python3-lib389 · almalinux 8 | 1.4.3.39-28.module_el8.10.0+4274+00f9a3f1 | ALSA-2026:64791 | Sep 8, 2026 |
| python3-lib389 · almalinux 9 | 2.8.0-10.el9_8 | ALSA-2026:64784 | Sep 8, 2026 |
| python3-lib389 · ol 10 | 0:3.2.0-10.el10_2 | ELSA-2026-64785-0 | Sep 8, 2026 |
| python3-lib389 · ol 8 | 0:1.4.3.39-28.module+el8.10.0+91024+7bf29691 | ELSA-2026-64791-0 | Sep 10, 2026 |
| python3-lib389 · ol 9 | 0:2.8.0-10.el9_8 | ELSA-2026-64784-0 | Sep 8, 2026 |
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