OpenSearch is vulnerable to DoS via complex query_string inputs
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 2.19.4 and versions 3.0.0 through 3.2.0.
01
describes (1)
Related CVEs.
| ID | severity | exploitable | ||
|---|---|---|---|---|
| CVE-2025-9624US | high7.5 | — | ||
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… | ||||
02
references
External citations — patches, advisories, analysis.
- https://caverav.cl/posts/opensearch-dos/opensearch-dosWEB
- https://fluidattacks.com/advisories/chickWEB
- https://github.com/opensearch-project/OpenSearchPACKAGE
- https://github.com/opensearch-project/OpenSearch/pull/19491WEB
- https://github.com/opensearch-project/OpenSearch/releases/tag/2.19.4WEB
- https://github.com/opensearch-project/OpenSearch/releases/tag/3.3.0WEB
- https://nvd.nist.gov/vuln/detail/CVE-2025-9624ADVISORY
- https://opensearch.org/blog/explore-opensearch-3-3WEB
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