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CVE-2026-5059

Severity
CRITICAL
CVSS
9.8
EPSS
0.01908
Risk score
39.87
CISA KEV
No
PoC
No
Published
2026-04-11
Modified
2026-04-13
First seen
2026-08-07
Aliases
EUVD-2026-21656, GHSA-FGMX-XFP3-W28P, PYSEC-2026-288
Products
aws-mcp-server:aws-mcp-server 1.3.0
Sources
euvd EUVD-2026-21656

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.

References