CVE-2025-37731
MEDIUM6.8EPSS 0.04%Elasticsearch PKI Realm Authentication Bypass Vulnerability Allows User Impersonation Through Crafted Client Certificates
Published: 12/15/2025Modified: 2/4/2026
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.
Affected packages (2)
- Bitnami/elasticsearchfrom 0, < 8.19.8, >= 9.0.0, < 9.1.8, >= 9.2.0, < 9.2.2
- Maven/org.elasticsearch:elasticsearch>= 7.0.0-alpha1, < 8.19.8
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | MEDIUM6.8 | CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N |
References (6)
- ADVISORYhttps://nvd.nist.gov/vuln/detail/CVE-2025-37731
- PATCHhttps://github.com/elastic/elasticsearch
- WEBhttps://discuss.elastic.co/t/elasticsearch-8-19-8-9-1-8-and-9-2-2-security-update-esa-2025-27/384063
- WEBhttps://github.com/elastic/elasticsearch/commit/cd97b8566bf56e628070021300784cb9cee0286f
- WEBhttps://github.com/elastic/elasticsearch/commit/d8a408da79f214395845d99d241e832077045983
- WEBhttps://github.com/elastic/elasticsearch/commit/e519fe4c51a3c887675eb7daea2f914738847f23