CVE-2026-84452

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

Source

https://cve.org/CVERecord?id=CVE-2026-84452

Import Source

https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-84452.json

JSON Data

https://api.osv.dev/v1/vulns/CVE-2026-84452

Aliases

GHSA-96p9-rh4f-92cf

Published

2026-09-02T19:22:55.672Z

Modified

2026-09-04T03:46:44.091608332Z

Severity

8.6 (High) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N CVSS Calculator

Summary

Windows ML CLI: CORS misconfig enables localhost RCE

Details

Windows ML CLI is a command line tool for building portable, performant, and high-quality AI models for Windows ML. Prior to 0.4.0, the src/winml/modelkit/serve/cliapi.py component exposes WinML CLI commands through a localhost HTTP API without authentication and configures the alloworigins setting as a wildcard in both src/winml/modelkit/serve/cliapi.py and src/winml/modelkit/serve/app.py. A malicious website loaded by a user can send cross-origin requests to /v1/cli/build or /v1/cli/config and set the trustremotecode parameter to true, which is converted to the --trust-remote-code command-line flag without validation. This reaches AutoConfig.frompretrained with trustremotecode=True in src/winml/modelkit/loader/_autoconfig.py and imports Python code from an attacker-controlled model repository, resulting in arbitrary code execution as the server user. This issue is fixed in version 0.4.0.

Database specific

{
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/84xxx/CVE-2026-84452.json",
    "unresolved_ranges": [
        {
            "source": "AFFECTED_FIELD",
            "extracted_events": [
                {
                    "fixed": "0.4.0"
                }
            ]
        }
    ],
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
        "CWE-306",
        "CWE-942"
    ]
}

References

Affected packages

Git / github.com/microsoft/winml-cli

Affected ranges

Type

GIT

Repo

https://github.com/microsoft/winml-cli

Events

Introduced

Fixed

f4073e0ef4700a25b623487e7e45c421ca0b9993

Database specific

Show details

{
    "source": "REFERENCES"
}

Database specific

source

"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-84452.json"