8.3
HIGH CVSS 4.0
CVE-2025-9624
OpenSearch 3.2.0 - Nested Boolean/Disjunction asymmetric DoS
Description

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.

INFO

Published Date :

Nov. 25, 2025, 8:16 p.m.

Last Modified :

Nov. 25, 2025, 10:16 p.m.

Remotely Exploit :

Yes !
Affected Products

The following products are affected by CVE-2025-9624 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Opensearch opensearch
CVSS Scores
The Common Vulnerability Scoring System is a standardized framework for assessing the severity of vulnerabilities in software and systems. We collect and displays CVSS scores from various sources for each CVE.
Score Version Severity Vector Exploitability Score Impact Score Source
CVSS 4.0 HIGH 84fe0718-d6bb-4716-a7e8-81a6d1daa869
CVSS 4.0 HIGH [email protected]
Solution
Update OpenSearch to version 3.2.0 or later to fix the denial of service vulnerability.
  • Upgrade OpenSearch to version 3.2.0 or newer.
  • Apply security patches and updates promptly.
Public PoC/Exploit Available at Github

CVE-2025-9624 has a 1 public PoC/Exploit available at Github. Go to the Public Exploits tab to see the list.

References to Advisories, Solutions, and Tools

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2025-9624.

URL Resource
https://fluidattacks.com/advisories/chick
https://opensearch.org/blog/explore-opensearch-3-3/
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2025-9624 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2025-9624 weaknesses.

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Community reconstruction of the legacy JSON NVD Data Feeds. This project uses and redistributes data from the NVD API but is neither endorsed nor certified by the NVD.

Shell

Updated: 4 hours, 33 minutes ago
185 stars 25 fork 25 watcher
Born at : May 17, 2023, 8 a.m. This repo has been linked 37 different CVEs too.

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2025-9624 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2025-9624 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • New CVE Received by [email protected]

    Nov. 25, 2025

    Action Type Old Value New Value
    Added Description 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.
    Added CVSS V4.0 AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:H/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
    Added CWE CWE-674
    Added Reference https://fluidattacks.com/advisories/chick
    Added Reference https://opensearch.org/blog/explore-opensearch-3-3/
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
Vulnerability Scoring Details
Base CVSS Score: 8.3
Attack Vector
Attack Complexity
Attack Requirements
Privileges Required
User Interaction
VS Confidentiality
VS Integrity
VS Availability
SS Confidentiality
SS Integrity
SS Availability