CVE-2026-19311- Missing Authorization in OpenSearch Alerting Plugin

Bulletin ID: 2026-078-AWS Scope: AWS Content Type: Important (requires attention) Publication Date: 08/12/2026 11:30 AM PDT Description: OpenSearch is a community-driven, open-source search and analytics suite. We identified CVE-2026-19311, a missing authorization issue in the Execute Monitor API of the OpenSearch Alerting plugin. This issue may allow an authenticated user with the alerting_full_access role to read, modify, or delete arbitrary index data via a crafted inline monitor request with unintentional data source and input index parameters. Impacted versions: OpenSearch Alerting Plu...