CVE-2026-115413 - AWS API MCP Server OAuth token audience validation bypass
CVE-2026-115413
Summary
Bulletin ID: 2026-085-AWS
Scope: AWS
Content Type: Important (requires attention)
Publication Date: 08/20/2026 13:30 PM PDT
Description:
Improper input validation in the Time Series Visual Builder (TSVB) plugin in OpenSearch Dashboards before 3.8 allows a remote authenticated user with standard data access permissions to execute arbitrary code on the server by sending a crafted JSON payload to the metrics visualization API endpoint. To mitigate this issue, users should upgrade to OpenSearch Dashboards 3.8 or later.
Impacted products and versions:
- OpenSearch-Dashboards (open-source, self-managed): >=3.0.0, <3.8.0
- OpenSearch-Dashboards (AWS Managed): >=3.0.0, <3.8.0
Please refer to the article below for the most up-to-date and complete information related to this AWS Security Bulletin.
Products covered
A separate affected-products list was not included in the collected bulletin.
Remediation
To mitigate this issue, users should upgrade to OpenSearch Dashboards 3.8 or later.
CVEs in this advisory 1
Update history
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Updates
- Added to SecurityAlert
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- Published by AWS
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