CVE-2026-83497

High

Description

Unrestricted deserialization of untrusted data in the cursor pagination component in the OpenSearch SQL plugin allows a remote authenticated user with basic read/search permissions to execute arbitrary code on the server by sending a crafted cursor parameter to the plugins/sql endpoint.

SeverityHigh

CVSS8.8

Exploit probability—

ProductOpenSearch

PublishedAug 31, 2026

First seenAug 31, 2026

Weakness typeCWE-502Deserialization of untrusted data

How to fix

Patches

opensearch.org/artifacts/by-version/#release-3-7-0
opensearch.org/artifacts/by-version/#release-2-19-6

Vendor advisories

aws.amazon.com/security/security-bulletins/2026-092-aws/

Affected products

Product	Affected versions	Fixed in
OpenSearch OpenSearch	2.8 ≤ v ≤ 3.6	—
Amazon Amazon OpenSearch Service	2.9 ≤ v ≤ 3.5	—

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