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PYSEC-2026-162

Quick fix

PYSEC-2026-162 — awslabs-aws-api-mcp-server: upgrade to the fixed version with the command below.

pip install --upgrade 'awslabs-aws-api-mcp-server>=1.3.9'

Details

Improper Protection of Alternate Path exists in the no-access and workdir feature of the AWS API MCP Server versions >= 0.2.14 and < 1.3.9 on all platforms may allow the bypass of intended file access restriction and expose arbitrary local file contents in the MCP client application context.

To remediate this issue, users should upgrade to version 1.3.9.

Are you affected?

Enter the version of the package you're using.

Affected packages

PyPI/awslabs-aws-api-mcp-server

Introduced in: 0.2.14Fixed in: 1.3.9

Fixpip install --upgrade 'awslabs-aws-api-mcp-server>=1.3.9'

References

https://aws.amazon.com/security/security-bulletins/2026-007-AWS/[ADVISORY]
https://pypi.org/project/awslabs.aws-api-mcp-server/1.3.9/[ADVISORY]
https://github.com/advisories/GHSA-2cpp-j2fc-qhp7[ADVISORY]