CVE-2026-56148: Elastic Elasticsearch

Medium severity, CVSS 6.5. EPSS: 0.5% chance of exploitation in the next 30 days.

Uncontrolled Recursion (CWE-674) in Elasticsearch can lead to a denial of service via Excessive Allocation (CAPEC-130). An authenticated user can submit a specially crafted query that causes excessive resource consumption while the request is processed, which may render the affected node unavailable.

Affected products

• Elastic Elasticsearch: from 8.0.0, before 8.19.17 (fixed in 8.19.17); from 9.0.0, before 9.3.6 (fixed in 9.3.6); from 9.4.0, before 9.4.3 (fixed in 9.4.3)

Published 2026-07-01. Last modified 2026-07-02.