CVE-2025-37731

Published: Dec 15, 2025

Modified: Feb 26, 2026

PUBLISHED

CVSS v3.1

6.8

MEDIUM

Description

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.

Vendor	Product	Versions
Elastic	Elasticsearch	affected `7.0.0 - <= 7.17.29` affected `8.0.0 - <= 8.19.7` affected `9.0.0 - <= 9.1.7` affected `9.2.0 - <= 9.2.1`

Weaknesses (CWE)

CWE-287

CVSS v3.1 Details

CVSS v3.1 Vector

CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N

Attack Vector

Network

Attack Complexity

High

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

None

References

https://discuss.elastic.co/t/elasticsearch-8-19-8-9-1-8-and-9-2-2-security-update-esa-2025-27/384063

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CVE-2025-37731

Description

Affected Products

Weaknesses (CWE)

CVSS v3.1 Details

References