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CVE-2026-48989

HIGH
8.9
CVSS 4.0
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.

Metadata

CVE ID
CVE-2026-48989
State
PUBLISHED
Assigner
GitHub_M
Reserved
2026-05-26 23:26 UTC
Published
2026-06-17 21:02 UTC
Last updated
2026-06-17 21:02 UTC
Primary CWE
CWE-306
CWE-306: Missing Authentication for Critical Function
Vendor / Product
CursorTouch / Windows-MCP
Sources
cve.org  ·  NVD

Severity & Metrics

8.9 HIGH CVSS 4.0
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P
Affected products (1)
VendorProductPlatformVersions
CursorTouch Windows-MCP — < 0.7.5
Weakness (CWE)
CWESourceDescription
CWE-306 cna CWE-306: Missing Authentication for Critical Function
CVSS scores (1)
ScoreSeverityVersionSourceVector
8.9 HIGH 4.0 cna CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P
References (2)
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