What is CVE-2025-9624?

CVE-2025-9624 is a high-severity vulnerability in Amazon Opensearch, classified under Uncontrolled Recursion. CVSS score: 7.5/10. Published 2025-11-25.

How severe is CVE-2025-9624?

High severity. CVSS v3 base score is 7.5 out of 10.

Vulnerability in Amazon Opensearch

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.

EPSS: 0.005 (40.5th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

Affected products

Amazon Opensearch
Opensearch — versions 3.0.0, 1.0.0

Weakness classification (CWE)

CWE-674 — Uncontrolled Recursion

References

help@fluidattacks.com (Exploit, Third Party Advisory, third-party-advisory)
help@fluidattacks.com (release-notes, patch)
help@fluidattacks.com (release-notes, patch)

Frequently asked questions

What is CVE-2025-9624?: CVE-2025-9624 is a high-severity vulnerability in Amazon Opensearch, classified under Uncontrolled Recursion. CVSS score: 7.5/10. Published 2025-11-25.
How severe is CVE-2025-9624?: High severity. CVSS v3 base score is 7.5 out of 10.