CVE-2026-5058

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.

Score

CVSS 3.0 9.8 Critical

Status

Awaiting Analysis - zdi-disclosures@trendmicro.com

Published

2026-04-11

Last modified

2026-04-13

Weaknesses

CWE-78

Affected products

• Aws-mcp-server (Aws-mcp-server)

References

• https://www.zerodayinitiative.com/advisories/ZDI-26-246/