CVE-2026-18428

HighCVSS 8.8/10Last modified Aug 14, 2026

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.

Metrics

CVSS 3.1 8.8/10CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Weakness enumeration

CWE-693

Affected software

Source: the vendor's advisory (CNA). NVD analysis pending.

No affected versions have been published.

Timeline

Published
Aug 13, 2026
Last modified
Aug 14, 2026
NVD status
Awaiting Analysis

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CVE-2026-18428: High severity, CVSS 8.8 | Vulnix