Security Advisory

CVE-2026-48989

CVE vulnerability detail - eXtreme Datacenter Security Operations

Published 2026-06-17 21:02:15

Last updated 2026-06-18 15:44:08

Assigner GitHub_M

CVSS score 8.9

State PUBLISHED

Description

Windows-MCP is an open-source project that integrates AI agents with Windows. In versions prior to 0.7.5, certain HTTP modes exposed the MCP control plane without authentication while enabling wildcard CORS (allow_origins=*, allow_methods=*, allow_headers=*). Because the same server also exposed a PowerShell tool that executes caller-controlled commands as the Windows user running Windows-MCP, attackers could reach the control plane from arbitrary origins or non-browser clients and achieve arbitrary PowerShell execution. This issue was fixed in version 0.7.5.

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