CVE-2026-115845 (GCVE-0-2026-115845)

Vulnerability from cvelistv5 – Published: 2026-10-23 19:04 – Updated: 2026-10-23 19:04 Exclusively Hosted Service
VLAI
Title
Incomplete validation in the run_script Python sandbox in AWS MCP Server
Summary
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.
Severity
6.4 (Medium)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
5.3 (Medium)
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N
CWE
  • CWE-184 - Incomplete list of disallowed inputs
Assigner
AMZN CNA under the mitre root
CNA scorecard A 94/100 over 139 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
AWS AWS MCP Server Affected: N/A (custom)
    cpe:2.3:a:aws:aws_mcp_server:n_a:*:*:*:*:*:*:*
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