CVE-2025-37731
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.
SeverityMedium
CVSS6.8
Exploit probability—
Product
Elasticsearch
PublishedDec 15, 2025
First seenDec 15, 2025
Weakness typeCWE-287Improper authentication
How to fix
Update
- elastic elasticsearch8.19.8, 9.1.8, 9.2.2 or later
- org.elasticsearch.plugin:x-pack-security8.19.8, 9.1.8, 9.2.2 or later
- org.elasticsearch.plugin:x-pack-core8.19.8, 9.1.8, 9.2.2 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| elastic elasticsearch | 7.0.0 ≤ v ≤ 7.17.29, 8.0.0 ≤ v < 8.19.8, 9.0.0 ≤ v < 9.1.8, 9.2.0 ≤ v < 9.2.2 | 8.19.8, 9.1.8, 9.2.2 |
| org.elasticsearch.plugin:x-pack-securityMaven | 7.0.0-alpha1 ≤ v < 8.19.8, 9.0.0-beta1 ≤ v < 9.1.8, 9.2.0 ≤ v < 9.2.2 | 8.19.8, 9.1.8, 9.2.2 |
| org.elasticsearch.plugin:x-pack-coreMaven | 7.0.0-alpha1 ≤ v < 8.19.8, 9.0.0-beta1 ≤ v < 9.1.8, 9.2.0 ≤ v < 9.2.2 | 8.19.8, 9.1.8, 9.2.2 |
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