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OpenAdvisories
High · 8.1 CVE-2026-19311 EUVD-2026-57420GHSA-4v32-vrp2-28jp

Missing Authorization in Execute Monitor API in OpenSearch Alerting Plugin

Published Aug 12, 2026 · Updated Aug 13, 2026 · Assigned by AMZN

Description

Missing authorization in the Execute Monitor API in Amazon OpenSearch Alerting plugin might allow an authenticated remote user to read, modify, or delete arbitrary index data via a crafted inline monitor request with unintentional data source and input index parameters.

Affected products

VendorProductAffectedFixed
AWS OpenSearch 2.4 – ≤ 3.5 —
Github OpenSearch 2.4.0 – ≤ 2.19.5, 3.0.0 – ≤ 3.7.0 —

References