Vulnerability · Published Nov 25, 2025 · Assigned by Fluid Attacks
CVE-2025-9624OpenSearch 3.2.0 - Nested Boolean/Disjunction asymmetric DoS
High 8.3
In plain English
A high-severity security flaw in OpenSearch from OpenSearch. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.7% (higher than 54% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS 4.0)8.3High
Exploit odds (30 days)0.7%top 45.7% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack toolingNoneno public tooling known
Official 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 between 3.0.0 and < 3.3.0 and OpenSearch < 2.19.4.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Maven | org.opensearch:opensearch-common | 3.3.0 | GHSA-mw3v-mmfw-3x2g |
| Maven | org.opensearch:opensearch-common | 2.19.4 | GHSA-mw3v-mmfw-3x2g |
| Ubuntu:24.04:LTS | opensearch | no fix listed | UBUNTU-CVE-2025-9624 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| OpenSearch | OpenSearch | 3.0.0 – before 3.3.01.0.0 – before 2.19.4 |
Weakness: CWE-674 · Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:H
References
- https://fluidattacks.com/advisories/chick third-party-advisory
- https://github.com/opensearch-project/OpenSearch/releases/tag/3.3.0 patch, release-notes
- https://github.com/opensearch-project/OpenSearch/releases/tag/2.19.4 patch, release-notes