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CVE-2025-9624

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Date: November 25, 2025

A vulnerability in OpenSearch allows attackers to cause Denial of Service (DoS) by submitting complex query_string inputs. This issue affects all OpenSearch versions below 3.2.0.

Severity Score

Related Resources (9)

https://fluidattacks.com/advisories/chick
https://opensearch.org/blog/explore-opensearch-3-3/
https://opensearch.org/blog/explore-opensearch-3-3
https://github.com/opensearch-project/OpenSearch/releases/tag/3.3.0
https://github.com/opensearch-project/OpenSearch/pull/19491
https://github.com/opensearch-project/OpenSearch/releases/tag/2.19.4
https://github.com/opensearch-project/OpenSearch
https://nvd.nist.gov/vuln/detail/CVE-2025-9624
https://www.mend.io/vulnerability-database/CVE-2025-9624

Severity Score

Weakness Type (CWE)

Uncontrolled Recursion

CWE-674

Top Fix

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Upgrade Version

Upgrade to version org.opensearch:opensearch:2.19.4;org.opensearch:opensearch:3.3.0;org.opensearch:opensearch-common:3.3.0;org.opensearch:opensearch-common:2.19.4;https://github.com/opensearch-project/OpenSearch.git - 2.19.4;https://github.com/opensearch-project/OpenSearch.git - 3.3.0

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CVSS v3.1

Base Score:
Attack Vector (AV): NETWORK
Attack Complexity (AC): LOW
Privileges Required (PR): NONE
User Interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality (C): NONE
Integrity (I): NONE
Availability (A): HIGH

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