Home/CVE/A vulnerability in OpenSearch allows attackers to cause Denial of Service (DoS) by submitting complex query_string input
CVE

CVE-2025-9624

A vulnerability in OpenSearch allows attackers to cause Denial of Service (DoS) by submitting complex query_string input

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.

HIGH · CVSS 7.5 EPSS 0.00012
Act now
  • Public exploit or PoC is available
  • CVSS base score ≥ 7.0
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-674Uncontrolled Recursion
▤

Affected Products & Versions

1
amazon opensearch< 3.3.0
▤

Affected Packages

1
Language-ecosystem packages (from OSV) tied to this CVE, with the version that fixes it - the dependency-level detail NVD doesn’t carry.
Maven org.opensearch:opensearch-common HIGH fixed in 3.3.0
⚠

Public Exploits & PoCs

1
pocfluidattacks.com · chickfluidattacks.com
▣

Scoring & Timeline

7.5
HIGH · CVSS v3.1 · help@fluidattacks.com
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD25 Nov 2025 · 08:16 PM
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
SSVC triage · cisa-vulnrichment
Exploitation
poc
Automatable
no
Technical impact
partial
SSVC asks the questions that actually drive patch urgency: is it being exploited, can attacks be automated, and how total is the impact.
🔗

References & Sources

2
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://github.com/opensearch-project/OpenSearch/releases/tag/2.19.4
https://github.com/opensearch-project/OpenSearch/releases/tag/3.3.0
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