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/cli_api.py component exposes WinML CLI commands through a localhost HTTP API without authentication and configures the allow_origins setting as a wildcard in both src/winml/modelkit/serve/cli_api.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 trust_remote_code parameter to true, which is converted to the --trust-remote-code command-line flag without validation. This reaches AutoConfig.from_pretrained with trust_remote_code=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.
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Affected Vendors & Products
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Thu, 03 Sep 2026 17:30:00 +0000
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ssvc
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Thu, 03 Sep 2026 16:00:00 +0000
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Microsoft
Microsoft winml-cli |
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Microsoft
Microsoft winml-cli |
Wed, 02 Sep 2026 19:30:00 +0000
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| Description | 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/cli_api.py component exposes WinML CLI commands through a localhost HTTP API without authentication and configures the allow_origins setting as a wildcard in both src/winml/modelkit/serve/cli_api.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 trust_remote_code parameter to true, which is converted to the --trust-remote-code command-line flag without validation. This reaches AutoConfig.from_pretrained with trust_remote_code=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. | |
| Title | Windows ML CLI: CORS misconfig enables localhost RCE | |
| Weaknesses | CWE-306 CWE-942 |
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cvssV4_0
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Status: PUBLISHED
Assigner: GitHub_M
Published:
Updated: 2026-09-03T16:01:26.554Z
Reserved: 2026-09-01T20:05:09.423Z
Link: CVE-2026-84452
Updated: 2026-09-03T16:01:03.463Z
Status : Received
Published: 2026-09-02T20:17:41.350
Modified: 2026-09-03T17:17:25.297
Link: CVE-2026-84452
No data.
OpenCVE Enrichment
Updated: 2026-09-03T15:33:45Z