CVE-2026-115845
Incomplete validation in the run_script Python sandbox in AWS MCP Server
CVSS Score
6.4
EPSS Score
0.0%
EPSS Percentile
0th
An incomplete list of disallowed inputs in the Python code validator of the run_script tool in AWS MCP Server might allow an authenticated remote user to execute arbitrary code within their own isolated session environment via a crafted script. AWS fixed this issue service-side. No customer action is required.
| CWE | CWE-184 |
| Vendor | aws |
| Product | aws mcp server |
| Published | Oct 23, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Changed
Confidentiality
Low
Integrity
Low
Availability
None
Affected Versions
AWS / AWS MCP Server
N/A