Vulnerability 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.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linuxfoundation | Onnx | <= 1.20.1 |
Related Weaknesses (CWE)
References
- https://github.com/ZeroXJacks/CVEs/blob/main/2026/CVE-2026-28500.mdPatch
- https://github.com/onnx/onnx/security/advisories/GHSA-hqmj-h5c6-369mVendor Advisory
- https://github.com/ZeroXJacks/CVEs/blob/main/2026/CVE-2026-28500.mdPatch
FAQ
What is CVE-2026-28500?
CVE-2026-28500 is a vulnerability with a CVSS score of 8.6 (HIGH). 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 improp...
How severe is CVE-2026-28500?
CVE-2026-28500 has been rated HIGH with a CVSS base score of 8.6/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-28500?
Check the references section above for vendor advisories and patch information. Affected products include: Linuxfoundation Onnx.