NULL Pointer Dereference Affecting python3-lib389 package, versions <0:1.4.3.39-28.module+el8.10.0+24822+205d20dc


Severity

Recommended
critical

Based on CentOS security rating.

Threat Intelligence

EPSS
0.85% (56th percentile)

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  • Snyk IDSNYK-CENTOS8-PYTHON3LIB389-19741983
  • published13 Sept 2026
  • disclosed7 Sept 2026

Introduced: 7 Sep 2026

CVE-2026-18453  (opens in a new tab)
CWE-476  (opens in a new tab)

How to fix?

Upgrade Centos:8 python3-lib389 to version 0:1.4.3.39-28.module+el8.10.0+24822+205d20dc or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream python3-lib389 package and not the python3-lib389 package as distributed by Centos. See How to fix? for Centos:8 relevant fixed versions and status.

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.

CVSS Base Scores

version 3.1