CVE-2026-48989: CWE-306: Missing Authentication for Critical Function in CursorTouch Windows-MCP
Windows-MCP versions prior to 0.7.5 had a vulnerability where certain HTTP modes exposed the control plane without authentication and allowed wildcard CORS settings. This exposure enabled attackers to reach a PowerShell tool that executes commands as the Windows user running Windows-MCP, leading to arbitrary code execution. The issue was fixed in version 0.7.5.
AI Analysis
Technical Summary
CVE-2026-48989 describes a missing authentication vulnerability (CWE-306) in Windows-MCP before version 0.7.5. The vulnerability arises because the MCP control plane was exposed over HTTP without authentication and with permissive CORS settings (allow_origins=*, allow_methods=*, allow_headers=*). Since the same server exposed a PowerShell tool capable of executing caller-controlled commands as the Windows user, attackers could exploit this to perform arbitrary PowerShell command execution remotely from any origin or non-browser client. This critical security flaw was addressed and fixed in Windows-MCP version 0.7.5.
Potential Impact
An attacker can remotely execute arbitrary PowerShell commands as the Windows user running Windows-MCP without any authentication or user interaction. This leads to a high-impact compromise of the affected system, including potential full control over the host environment.
Mitigation Recommendations
This vulnerability was fixed in Windows-MCP version 0.7.5. Users should upgrade to version 0.7.5 or later to remediate this issue. No other official remediation or temporary fix information is available. Patch status is not explicitly confirmed beyond the stated fix version; users should verify with the vendor advisory for the latest guidance.
CVE-2026-48989: CWE-306: Missing Authentication for Critical Function in CursorTouch Windows-MCP
Description
Windows-MCP versions prior to 0.7.5 had a vulnerability where certain HTTP modes exposed the control plane without authentication and allowed wildcard CORS settings. This exposure enabled attackers to reach a PowerShell tool that executes commands as the Windows user running Windows-MCP, leading to arbitrary code execution. The issue was fixed in version 0.7.5.
CVSS v4.0
Score 8.9high
Affected software
pkg:github/cursortouch/Windows-MCPRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-48989 describes a missing authentication vulnerability (CWE-306) in Windows-MCP before version 0.7.5. The vulnerability arises because the MCP control plane was exposed over HTTP without authentication and with permissive CORS settings (allow_origins=*, allow_methods=*, allow_headers=*). Since the same server exposed a PowerShell tool capable of executing caller-controlled commands as the Windows user, attackers could exploit this to perform arbitrary PowerShell command execution remotely from any origin or non-browser client. This critical security flaw was addressed and fixed in Windows-MCP version 0.7.5.
Potential Impact
An attacker can remotely execute arbitrary PowerShell commands as the Windows user running Windows-MCP without any authentication or user interaction. This leads to a high-impact compromise of the affected system, including potential full control over the host environment.
Mitigation Recommendations
This vulnerability was fixed in Windows-MCP version 0.7.5. Users should upgrade to version 0.7.5 or later to remediate this issue. No other official remediation or temporary fix information is available. Patch status is not explicitly confirmed beyond the stated fix version; users should verify with the vendor advisory for the latest guidance.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- GitHub_M
- Date Reserved
- 2026-05-26T23:26:07.975Z
- Cvss Version
- 4.0
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a33168ef198dc38c1148db8
Added to database: 6/17/2026, 9:50:06 PM
Last enriched: 6/17/2026, 10:05:38 PM
Last updated: 6/18/2026, 4:35:57 AM
Views: 5
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