CVE-2025-9624

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.

Scoring

Severity

HIGH

CVSS base score

8.3

CVSS vector

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:H

EPSS probability

0.51%

CWE

CWE-674

Published

2025-11-25

Last modified

2026-03-12

Affected products

• OpenSearch OpenSearch
• OpenSearch OpenSearch

Weakness type

• CWE-674

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