CVE-2026-48989

See a problem?
Please try reporting it to the source first.

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

GHSA-vrxg-gm77-7q5g

Published

2026-06-17T21:02:15.047Z

Modified

2026-07-08T08:05:23.182689372Z

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 (alloworigins=*, allowmethods=, 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

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

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

{
    "source": [
        "AFFECTED_FIELD",
        "REFERENCES"
    ],
    "extracted_events": [
        {
            "introduced": "0"
        },
        {
            "fixed": "0.7.5"
        }
    ]
}

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"