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.
Published · last modified .
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.
EPSS exploit prediction
EPSS: 0.005 (40.8th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 41st percentile — 40.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.005 · newest: 0.005 · change: 0.000
Affected products
- Amazon Opensearch
- Opensearch — versions 3.0.0, 1.0.0
Weakness classification (CWE)
References
- fluidattacks.com/advisories/chick (Exploit, Third Party Advisory, third-party-advisory)
- github.com/opensearch-project/OpenSearch/releases/tag/3.3.0 (release-notes, patch)
- github.com/opensearch-project/OpenSearch/releases/tag/2.19.4 (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.