CVE-2025-37731 Affecting ruby4.0-elasticsearch package, versions <9.3.0-r0


Severity

Recommended
0.0
high
0
10

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Threat Intelligence

EPSS
0.19% (9th percentile)

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  • Snyk IDSNYK-CHAINGUARDLATEST-RUBY40ELASTICSEARCH-15248131
  • published8 Feb 2026
  • disclosed15 Dec 2025

Introduced: 15 Dec 2025

CVE-2025-37731  (opens in a new tab)

How to fix?

Upgrade Chainguard ruby4.0-elasticsearch to version 9.3.0-r0 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream ruby4.0-elasticsearch package and not the ruby4.0-elasticsearch package as distributed by Chainguard. See How to fix? for Chainguard relevant fixed versions and status.

Improper Authentication in Elasticsearch PKI realm can lead to user impersonation via specially crafted client certificates. A malicious actor would need to have such a crafted client certificate signed by a legitimate, trusted Certificate Authority.

CVSS Base Scores

version 3.1