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OpenAdvisories
High · 8.7 CVE-2026-63393 EUVD-2026-114543

OpenSearch SQL plugin: Unsafe cursor deserialization permits server code execution

Published Oct 30, 2026 · Updated Nov 2, 2026 · Assigned by GitHub_M

Description

OpenSearch SQL supports querying OpenSearch data using SQL and Piped Processing Language. In the 2.x line from 2.8.0.0 until 2.19.6.0, and the 3.x line prior to 3.7.0.0, a remote authenticated user with basic read/search permissions can provide a crafted `cursor` parameter to the `plugins/sql` endpoint and trigger unsafe deserialization of untrusted data, resulting in arbitrary code execution on the server. This issue is fixed in repository releases 2.19.6.0 and 3.7.0.0.

Affected products

VendorProductAffectedFixed
opensearch-project sql >= 2.8.0.0, < 2.19.6.0, >= 3.0.0.0-alpha1, < 3.7.0.0 —

References