CVE-2026-5058: Aws-Mcp-Server

Critical severity, CVSS 9.8. EPSS: 2.3% chance of exploitation in the next 30 days.

aws-mcp-server 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-27968.

Affected products

Published 2026-04-11. Last modified 2026-06-17.