CVE-2026-48989
Windows-MCP: HTTP transports expose unauthenticated PowerShell control with wildcard CORS
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.
INFO
Published Date :
June 17, 2026, 9:02 p.m.
Last Modified :
June 17, 2026, 9:02 p.m.
Remotely Exploit :
No
Source :
GitHub_M
Affected Products
The following products are affected by CVE-2026-48989
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
No affected product recoded yet
Solution
- Update Windows-MCP to version 0.7.5.
- Apply vendor patches if available.
- Review and restrict CORS settings.
- Implement proper authentication for control plane.
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