OS command injection in aws-mcp-server
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Code execution
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- No fix listed
Attack profile from CVSS 3.0 · CNA. Fix status from CNA and GitHub. Impact type from CWE-78.
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.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- Yes
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| aws-mcp-server | aws-mcp-server | 1.3.0 | — | No fix listed | CNA |
| — | aws-mcp (PyPI) | up to 1.7.0 | — | No fix listed | GHSA-fgmx-xfp3-w28p |
- aws-mcp-server Vendoraws-mcp-server Affected 1.3.0 Fixed in — No fix listed CNA
- aws-mcp (PyPI) Vendor— Affected up to 1.7.0 Fixed in — No fix listed GHSA-fgmx-xfp3-w28p
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2026-5059
- 2026-10-03 Alias added: GHSA-fgmx-xfp3-w28p
References
More aws-mcp-server vulnerabilities
- TI-2026-04413 OS command injection in aws-mcp-server CVSS 3.0CRITICAL 9.8
Sources
- CVE-2026-5059 · CVE Program
- CVE-2026-5059 · NVD
- FIRST EPSS
- GHSA-fgmx-xfp3-w28p · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences