CRITICAL9.8

PYSEC-2026-288

aws-mcp has a Command Injection Remote Code Execution Vulnerability

Details

aws-mcp-server AWS CLI Command Injection Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of aws-mcp-server. Authentication is not required to exploit this vulnerability.

The specific flaw exists within the handling of the allowed commands list. The issue results from the lack of proper validation of a user-supplied string before using it to execute a system call. An attacker can leverage this vulnerability to execute code in the context of the MCP server. Was ZDI-CAN-27969.

Are you affected?

Enter the version of the package you're using.

Affected packages

PyPI/aws-mcp

Introduced in: 0

No fixed version published yet for aws-mcp (pip). Pin to a known-safe version or switch to an alternative.

References

https://nvd.nist.gov/vuln/detail/CVE-2026-5059[ADVISORY]
https://github.com/alexei-led/aws-mcp-server[PACKAGE]
https://www.zerodayinitiative.com/advisories/ZDI-26-245[WEB]
https://pypi.org/project/aws-mcp[PACKAGE]
https://github.com/advisories/GHSA-fgmx-xfp3-w28p[ADVISORY]