Open Neural Network Exchange (ONNX) is an open standard for machine learning interoperability. In versions up to and including 1.20.1, a security control bypass exists in onnx.hub.load() due to improper logic in the repository trust verification mechanism. While the function is designed to warn users when loading models from non-official sources, the use of the silent=True parameter completely suppresses all security warnings and confirmation prompts. This vulnerability transforms a standard model-loading function into a vector for Zero-Interaction Supply-Chain Attacks. When chained with file-system vulnerabilities, an attacker can silently exfiltrate sensitive files (SSH keys, cloud credentials) from the victim's machine the moment the model is loaded. As of time of publication, no known patched versions are available.
Advisories
Source ID Title
Github GHSA Github GHSA GHSA-hqmj-h5c6-369m ONNX Untrusted Model Repository Warnings Suppressed by silent=True in onnx.hub.load() — Silent Supply-Chain Attack
Fixes

Solution

No solution given by the vendor.


Workaround

No workaround given by the vendor.

History

Thu, 19 Mar 2026 00:15:00 +0000

Type Values Removed Values Added
Weaknesses CWE-829
References
Metrics threat_severity

None

threat_severity

Important


Wed, 18 Mar 2026 20:00:00 +0000

Type Values Removed Values Added
First Time appeared Linuxfoundation
Linuxfoundation onnx
CPEs cpe:2.3:a:linuxfoundation:onnx:*:*:*:*:*:*:*:*
Vendors & Products Linuxfoundation
Linuxfoundation onnx

Wed, 18 Mar 2026 15:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Wed, 18 Mar 2026 12:15:00 +0000

Type Values Removed Values Added
First Time appeared Onnx
Onnx onnx
Vendors & Products Onnx
Onnx onnx

Wed, 18 Mar 2026 01:30:00 +0000

Type Values Removed Values Added
Description Open Neural Network Exchange (ONNX) is an open standard for machine learning interoperability. In versions up to and including 1.20.1, a security control bypass exists in onnx.hub.load() due to improper logic in the repository trust verification mechanism. While the function is designed to warn users when loading models from non-official sources, the use of the silent=True parameter completely suppresses all security warnings and confirmation prompts. This vulnerability transforms a standard model-loading function into a vector for Zero-Interaction Supply-Chain Attacks. When chained with file-system vulnerabilities, an attacker can silently exfiltrate sensitive files (SSH keys, cloud credentials) from the victim's machine the moment the model is loaded. As of time of publication, no known patched versions are available.
Title ONNX Untrusted Model Repository Warnings Suppressed by silent=True in onnx.hub.load() — Silent Supply-Chain Attack
Weaknesses CWE-345
CWE-494
CWE-693
References
Metrics cvssV3_1

{'score': 8.6, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N'}


Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published:

Updated: 2026-03-18T14:08:50.003Z

Reserved: 2026-02-27T20:57:47.708Z

Link: CVE-2026-28500

cve-icon Vulnrichment

Updated: 2026-03-18T14:08:41.528Z

cve-icon NVD

Status : Analyzed

Published: 2026-03-18T02:16:24.227

Modified: 2026-03-18T19:47:59.707

Link: CVE-2026-28500

cve-icon Redhat

Severity : Important

Publid Date: 2026-03-18T01:15:07Z

Links: CVE-2026-28500 - Bugzilla

cve-icon OpenCVE Enrichment

Updated: 2026-03-18T10:42:20Z