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CVE-2026-5059 — Vulnerability in aws-mcp — CVE Details

CRITICAL

aws-mcp has a Command Injection Remote Code Execution Vulnerability

Published April 11, 2026Updated June 29, 2026Source: osv

Summary

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.

Advisory Timeline

  • First published April 11, 2026 (184 days ago).
  • Last revised June 29, 2026 — 79 days after initial publication.

Affected Packages (1)

Affects 1 ecosystem: pypi (1).

PackageEcosystemAffectedFixed In
aws-mcp
pypi
1.5.4, 1.5.5, 1.5.6, 1.6.0 (+1 more)Range-based data available

Vulnerability Classification

Common Weakness Enumeration (CWE) identifiers for this vulnerability type.

  • CWE-78
    OS Command InjectionMITRE

CVSS Score Breakdown

What the CVSS (Common Vulnerability Scoring System) 9.8 score means for each attack dimension.

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

References

Frequently Asked Questions

What is CVE-2026-5059?
aws-mcp has a Command Injection Remote Code Execution Vulnerability This vulnerability has been assigned a severity rating of CRITICAL (CVSS score: 9.8/10).
How do I check if my project is affected by CVE-2026-5059?
CVE-2026-5059 affects aws-mcp. Use GeekWala's free vulnerability scanner to check your dependencies against CVE-2026-5059 and 200,000+ other known vulnerabilities.

Severity & Exploitability

CVSS Score
9.8

Exploitation is straightforward and causes maximum impact. Patch immediately.

Also Known As

GHSA-fgmx-xfp3-w28p
PYSEC-2026-288

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