CVE-2025-9624: Amazon Opensearch

High severity, CVSS 7.5. EPSS: 0.5% chance of exploitation in the next 30 days.

A vulnerability in OpenSearch allows attackers to cause Denial of Service (DoS) by submitting complex query_string inputs. This issue affects all OpenSearch versions between 3.0.0 and < 3.3.0 and OpenSearch < 2.19.4.

Affected products

• Amazon Opensearch: before 3.3.0 (fixed in 3.3.0)

Published 2025-11-25. Last modified 2026-06-17.