CVE-2026-5059: aws-mcp has a Command Injection Remote Code Execution Vulnerability

April 11, 2026 (updated April 14, 2026)

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.

References

github.com/advisories/GHSA-fgmx-xfp3-w28p
github.com/alexei-led/aws-mcp-server
nvd.nist.gov/vuln/detail/CVE-2026-5059
www.zerodayinitiative.com/advisories/ZDI-26-245

Code Behaviors & Features

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