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CVE PROGRAM SOURCE RECORD8.5 High

CVE-2026-125271

AWS API MCP Server Security Policy Bypass via Incorrect Operation Name Normalization

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Status
Published
Published
Updated
Assigning organization
AMZN

Description

Incorrect normalization of operation names in the custom security policy enforcement in awslabs aws-api-mcp-server before 1.5.1 might allow an actor to execute AWS API operations across AWS services that the operator's security policy was configured to deny or require elicitation for, via calls to operations whose names contain consecutive capital letters. To remediate this issue, users should upgrade to version 1.5.1.

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 < 1.5.1affected

References