Command Injection Vulnerability in AWS MCP Server
CVE-2026-5058

9.8CRITICAL

Key Information:

Vendor

Aws-mcp-server

Status
Aws-mcp-server
Vendor
CVE Published:
11 April 2026

What is CVE-2026-5058?

The AWS MCP server contains a command injection vulnerability that enables remote attackers to execute arbitrary code on the server without requiring authentication. This flaw is due to insufficient validation of user-supplied strings used in system calls. Exploiting this vulnerability allows an attacker to run code in the context of the MCP server, potentially compromising the system's integrity and security.

Affected Version(s)

aws-mcp-server 1.3.0

References

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

CVSS V3.0

Score:
9.8
Severity:
CRITICAL
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.