critical9.8
CVE-2026-5059
aws-mcp-server AWS CLI Command Injection Remote Code Execution Vulnerability.
Impact
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.
Affected packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| pip | aws-mcp | <= 1.7.0 | none recorded |
Weakness classification
References
- NVD record
- CVE.org record
- GitHub advisory
- https://github.com/advisories/GHSA-fgmx-xfp3-w28p
- https://nvd.nist.gov/vuln/detail/CVE-2026-5059
- https://www.zerodayinitiative.com/advisories/ZDI-26-245
- https://github.com/pypa/advisory-database/tree/main/vulns/aws-mcp/PYSEC-2026-288.yaml
- https://pypi.org/project/aws-mcp
- https://www.zerodayinitiative.com/advisories/ZDI-26-245/