CVE-2026-115845: CWE-184 Incomplete list of disallowed inputs in AWS AWS MCP Server
Description
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.
CVSS v3.1
Score 6.4medium
Affected software
AWS
AWS MCP Server
Weaknesses
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- AMZN
- Date Reserved
- 2026-10-23T17:25:48.577Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Is Cloud Service
- true
- Vendor Advisory Urls
- [{"url":"https://aws.amazon.com/security/security-bulletins/2026-149-aws/","vendor":"AWS"}]
Threat ID: 6adbb3a8d73cc49347b57799
Added to database: 10/23/2026, 19:21:12 UTC
Last updated: 10/23/2026, 19:21:12 UTC
Views: 1
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