Improper Certificate Validation Affecting log4j-jcl package, versions *


Severity

Recommended
0.0
medium
0
10

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
0.02% (5th percentile)

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  • Snyk IDSNYK-RHEL9-LOG4JJCL-16320862
  • published29 Apr 2026
  • disclosed27 Apr 2026

Introduced: 27 Apr 2026

NewCVE-2026-40970  (opens in a new tab)
CWE-295  (opens in a new tab)

How to fix?

There is no fixed version for RHEL:9 log4j-jcl.

NVD Description

Note: Versions mentioned in the description apply only to the upstream log4j-jcl package and not the log4j-jcl package as distributed by RHEL. See How to fix? for RHEL:9 relevant fixed versions and status.

When configured to use an SSL bundle, Spring Boot's Elasticsearch auto-configuration does not perform hostname verification when connecting to the Elasticsearch server.

Affected: Spring Boot 4.0.0–4.0.5; upgrade to 4.0.6 or later per vendor advisory.

CVSS Base Scores

version 3.1