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CVE PROGRAM SOURCE RECORD7.3 High

CVE-2026-16584

AWS API MCP Server Security Policy Bypass via Startup Failure

Description

Improper handling of an initialization failure in AWS API MCP Server from 0.2.13 through 1.3.46 might allow an actor to bypass the user-configured security policy and execute AWS API operations that the policy was set to deny or gate. When initialization of the security policy enforcement data fails at server startup, the policy check is skipped for the lifetime of the process. IAM permissions on the configured credentials remain in effect and are unaffected. To remediate this issue, users should upgrade to version 1.3.47.

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

  • 0.2.13 to < 1.3.47affected

References