CVE-2026-102409: Elastic Elasticsearch

Medium severity, CVSS 6.5. EPSS: 0.3% chance of exploitation in the next 30 days.

Uncontrolled Recursion (CWE-674) in Elasticsearch can allow an authenticated user with low privileges to terminate an Elasticsearch node, resulting in denial of service, via Excessive Allocation (CAPEC-130).

Affected products

• Elastic Elasticsearch: from 9.2.0, up to and including 9.2.8; from 9.3.0, up to and including 9.3.8; from 9.4.0, up to and including 9.4.7; from 9.5.0, up to and including 9.5.4

Published 2026-10-06. Last modified 2026-10-07.