Vulnerability · Published Dec 15, 2025 · Assigned by elastic
CVE-2025-37731Elasticsearch Improper Authentication
Medium 6.8
In plain English
A medium-severity improper authentication in Elasticsearch from Elastic. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 9% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS 3.1)6.8Medium
Exploit odds (30 days)0.2%top 91.1% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official 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 & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Maven | org.elasticsearch.plugin:x-pack-core | 8.19.8 | GHSA-m9gh-789g-q5pv |
| Maven | org.elasticsearch.plugin:x-pack-core | 9.1.8 | GHSA-m9gh-789g-q5pv |
| Maven | org.elasticsearch.plugin:x-pack-core | 9.2.2 | GHSA-m9gh-789g-q5pv |
| Maven | org.elasticsearch.plugin:x-pack-security | 8.19.8 | GHSA-m9gh-789g-q5pv |
| Maven | org.elasticsearch.plugin:x-pack-security | 9.1.8 | GHSA-m9gh-789g-q5pv |
| Maven | org.elasticsearch.plugin:x-pack-security | 9.2.2 | GHSA-m9gh-789g-q5pv |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Elastic | Elasticsearch | 7.0.0 – through 7.17.298.0.0 – through 8.19.79.0.0 – through 9.1.79.2.0 – through 9.2.1 |
Weakness: CWE-287 · Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N