CVE-2026-18428: SQL Query Validation Bypass in OpenSearch Direct Query
High · CVSS 8.8 (CVSS 3.1)EPSS 1.00%, 63th percentilePublished Updated Assigner: AMZN
Description
A SQL query validation bypass in the Flint extension query handler in the OpenSearch SQL plugin allows a remote authenticated actor with async query access to execute arbitrary code on Apache Spark workers by sending a crafted SQL query to the direct query endpoint.
Vector CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H · CWE-693
Tracked companies
Mapped from the CVE’s affected-product data, NVD CPE matches, vendor advisories or package feeds. A mapping means the vendor’s software is named, not that its hosted service was exposed.
Status incidents that name it
No tracked status incident names this CVE.
Affected vendors and products
AWS: OpensearchGithub: Opensearch
References
- CVE record on cve.org (opens in new tab)
- NVD entry (opens in new tab)
- aws.amazon.com/security/security-bulletins/2026-081-aws/ (opens in new tab)
- docs.aws.amazon.com/opensearch-service/latest/developerguide/service-software.html (opens in new tab)
- github.com/opensearch-project/sql/security/advisories/GHSA-g4jr-343c-fvjm (opens in new tab)
- opensearch.org/artifacts/by-version/ (opens in new tab)
- opensearch.org/artifacts/by-version/ (opens in new tab)
- CVE records from the CVE Program (cve.org). CVE® is a registered trademark of The MITRE Corporation. (opens in new tab)
- This product uses data from the NVD API but is not endorsed or certified by the NVD. (opens in new tab)
- Known Exploited Vulnerabilities catalog from CISA. (opens in new tab)
- EPSS scores from FIRST (Exploit Prediction Scoring System). (opens in new tab)