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AI agent vulnerability · Other MCP servers and tools

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

criticalCVSS 3.0 9.8GHSA-fgmx-xfp3-w28p

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.

Published Apr 11, 2026 · Updated Apr 14, 2026

Affected packages

aws-mcp

Ecosystem
PyPI
Affected
<= 1.7.0
Fixed in
No patched version yet
Check
pip show aws-mcp

Advisory details

From the GitHub Advisory Database (CC BY 4.0).

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.

Credited to arnewouters.

References

How this page is made: the data panel comes from the GitHub Advisory Database, CISA’s KEV catalog, the NVD and FIRST EPSS, and updates twice a day. No analysis has been written for this entry yet. Methodology

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