CVE-2026-48989

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Source

https://cve.org/CVERecord?id=CVE-2026-48989

Import Source

https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-48989.json

JSON Data

https://api.osv.dev/v1/vulns/CVE-2026-48989

Aliases

Published

2026-06-17T21:02:15Z

Modified

2026-10-28T02:31:14Z

Severity

8.9 (High) CVSS_V4 - 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 CVSS Calculator

Summary

Windows-MCP: HTTP transports expose unauthenticated PowerShell control with wildcard CORS

Details

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.

Database specific

{
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
        "CWE-306"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/48xxx/CVE-2026-48989.json"
}

References

Affected packages

Git / github.com/cursortouch/windows-mcp

Affected ranges

Type

GIT

Repo

https://github.com/cursortouch/windows-mcp

Events

Introduced

Fixed

470b2991b3eb9873cc3841db70a5685156c049c5

Database specific

Show details

{
    "extracted_events": [
        {
            "range": [
                {
                    "introduced": "0"
                },
                {
                    "fixed": "0.7.5"
                }
            ],
            "source": "AFFECTED_FIELD",
            "strategy": "StringRangeExpression"
        },
        {
            "original_tag": "v0.7.5",
            "range": [
                {
                    "fixed": "470b2991b3eb9873cc3841db70a5685156c049c5"
                }
            ],
            "source": "REFERENCES_TAG"
        },
        {
            "range": [
                {
                    "introduced": "0"
                },
                {
                    "fixed": "0.7.5"
                }
            ],
            "source": "DESCRIPTION"
        }
    ]
}

Affected versions

v0.*

v0.1

v0.2

v0.3

v0.5.4

v0.5.8

v0.6.0

v0.6.2

v0.6.9

v0.7.0

v0.7.1

v0.7.4

Database specific

source

"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-48989.json"