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    CVE-2026-115845

    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.

    Published:Oct 23, 2026
    Last Modified:Oct 23, 2026
    EPS:Oct 23, 2026
    EPSS Score:
    CVSS Score:6.4

    Affected Products

    Vendor
    Aws
    Product
    Aws-mcp-server
    Vendor
    Aws
    Product
    Aws Mcp Server

    Exploits

    No exploit reference

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High