Critical severity9.8NVD Advisory· Published Apr 11, 2026· Updated Apr 13, 2026

CVE-2026-5059

Description

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.

AI Insight

LLM-synthesized narrative grounded in this CVE's description and references.

Affected packages

Versions sourced from the GitHub Security Advisory.

Package	Affected versions	Patched versions
aws-mcpPyPI	<= 1.7.0	—

Affected products

ghsa-coords
pkg:pypi/aws-mcp
Range: <= 1.7.0

Patches

Vulnerability mechanics

References

github.com/advisories/GHSA-fgmx-xfp3-w28pghsaADVISORY
nvd.nist.gov/vuln/detail/CVE-2026-5059ghsaADVISORY
www.zerodayinitiative.com/advisories/ZDI-26-245ghsaWEB
www.zerodayinitiative.com/advisories/ZDI-26-245/nvd

News mentions

ZDI-26-245: (0Day) aws-mcp-server AWS CLI Command Injection Remote Code Execution Vulnerability
Zero Day Initiative · Apr 21, 2026

cvss	0.637
epss	0.002
exploit	0.000
kev	0.000
patch	0.000
ransomware	0.000