Security Advisory

CVE-2026-18420

CVE vulnerability detail - eXtreme Datacenter Security Operations

Published 2026-08-20 20:40:40

Last updated 2026-08-25 19:19:07

Assigner AMZN

CVSS score 8.8

State PUBLISHED

Description

Improper input validation in the Time Series Visual Builder (TSVB) plugin in OpenSearch Dashboards allows an authenticated remote user to execute arbitrary code on the server via a crafted JSON payload to the metrics visualization API endpoint. This issue is a form of prototype pollution that enables remote code execution. To remediate this issue, users should upgrade to OpenSearch Dashboards 3.8 or later.

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