VULNERABILITY INTELLIGENCE

CVE-2026-48989

EPSS probability0.40%
CISA KEVNot currently listed
Published2026-06-17
Last modified2026-10-26

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.

Weakness classification

  • security-advisories@github.com: CWE-306

Primary references