CVE-2026-48989: Cursortouch Windows-Mcp

High severity, CVSS 8.9. EPSS: 0.7% chance of exploitation in the next 30 days.

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.

Affected products

• Cursortouch Windows-Mcp: before 0.7.5 (fixed in 0.7.5)

Published 2026-06-17. Last modified 2026-06-23.