High severity8.8NVD Advisory· Published Aug 13, 2026
CVE-2026-18428
CVE-2026-18428
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.
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Affected products
1Patches
Vulnerability mechanics
References
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