CVE-2026-18428 SQL Query Validation Bypass in OpenSearch Direct Query

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...

CVE-2026-18428

CVE-2026-18428 affects the OpenSearch SQL plugin’s Flint extension query handler. A SQL query validation bypass allows a remote authenticated actor with async query access to send a crafted query to the direct query endpoint and potentially execute arbitrary code on Apache Spark workers. The vuln...