Elasticsearch PKI Realm Improper Auth Leads to User Impersonation
CVE-2025-37731 Published on December 15, 2025
Elasticsearch Improper Authentication
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.
Vulnerability Analysis
CVE-2025-37731 can be exploited with network access, and requires small amount of user privileges. This vulnerability is consided to have a high level of attack complexity. The potential impact of an exploit of this vulnerability is considered to have a high impact on confidentiality and integrity, and no impact on availability.
Weakness Type
What is an authentification Vulnerability?
When an actor claims to have a given identity, the software does not prove or insufficiently proves that the claim is correct.
CVE-2025-37731 has been classified to as an authentification vulnerability or weakness.
Products Associated with CVE-2025-37731
Want to know whenever a new CVE is published for Elasticsearch? stack.watch will email you.
Affected Versions
Elasticsearch:- Version 7.0.0, <= 7.17.29 is affected.
- Version 8.0.0, <= 8.19.7 is affected.
- Version 9.0.0, <= 9.1.7 is affected.
- Version 9.2.0, <= 9.2.1 is affected.
Exploit Probability
EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.