PT-2026-53383 · Pypi · Aws-Mcp

Published 2026-06-29 · Updated 2026-06-29

OSV

CVSS v3.1

9.8

Critical

Base vector

AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

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.

Fix

Related Identifiers

PYSEC-2026-288

Affected Products

Aws-Mcp

References · 6

• https://osv.dev/vulnerability/PYSEC-2026-288 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-5059 · Security Note
• https://github.com/alexei-led/aws-mcp-server · Note
• https://pypi.org/project/aws-mcp · Note
• https://github.com/advisories/GHSA-fgmx-xfp3-w28p · Note
• https://zerodayinitiative.com/advisories/ZDI-26-245 · Note