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CVE PROGRAM SOURCE RECORD7.3 High

CVE-2026-115413

AWS API MCP Server OAuth Token Audience Validation Bypass

Description

Missing token audience validation in the OAuth authentication mode of AWS API MCP Server before version 1.6.0 might allow local users to run AWS operations with the server's configured AWS credentials via an access token issued to another application by the same identity provider. To remediate this issue, users should upgrade to version 1.6.0 and configure the expected token audience or client ID for the server.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

AWS aws-api-mcp-server

Default version status: unaffected

  • 1.3.0 to < 1.6.0affected

References