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.
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Fixes

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Workaround

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History

Fri, 30 Oct 2026 22:30:00 +0000

Type Values Removed Values Added
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.
Title OpenSearch SQL plugin: Unsafe cursor deserialization permits server code execution
Weaknesses CWE-502
References
Metrics cvssV4_0

{'score': 8.7, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N'}


Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published:

Updated: 2026-10-30T22:22:05.735Z

Reserved: 2026-07-16T17:39:30.171Z

Link: CVE-2026-63393

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-10-30T23:17:14.557

Modified: 2026-10-30T23:17:14.557

Link: CVE-2026-63393

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-10-31T00:00:27Z

Weaknesses