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Vulnerability record · CVE-2026-83497 · published 31 August 2026

CVE-2026-83497: Deserialization of untrusted data vulnerability

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.

8.7 CVSS 4.0 High EPSS 0.96% · top 39.9% CWE-502 · Deserialization of untrusted data Awaiting Analysis
8.7CVSS 4.0 base score
0.96%EPSS exploitation probability, 30 days
NoNot in CISA KEV
0Affected product versions listed by NVD
3References
3 Sep 2026Last modified by NVD

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.

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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:

References

LinkTags
https://aws.amazon.com/security/security-bulletins/2026-092-aws/
https://opensearch.org/artifacts/by-version/#release-2-19-6
https://opensearch.org/artifacts/by-version/#release-3-7-0

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Source: NIST National Vulnerability Database (record CVE-2026-83497), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.