CVE-2025-9624

HIGH

OpenSearch 3.0.0-3.2.9 and < 2.19.4 - Denial of Service via Complex Query String Input

Title source: llm
STIX 2.1

Description

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.

References (3)

Core 3
Core References
Exploit, Third Party Advisory third-party-advisory
https://fluidattacks.com/advisories/chick

Scores

CVSS v3 7.5
EPSS 0.0045
EPSS Percentile 35.7%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CISA SSVC

Vulnrichment
Exploitation poc
Automatable no
Technical Impact partial

Details

CWE
CWE-674
Status published
Products (2)
amazon/opensearch < 3.3.0
org.opensearch/opensearch-common 3.0.0 - 3.3.0Maven
Published Nov 25, 2025
Tracked Since Feb 18, 2026