CVE WatchJul 15, 2026

CVE-2026-28500

Open Neural Network Exchange (ONNX) is an open standard for machine learning interoperability. In versions up to and including 1.20.1, a sec

CVSS

8.6

High

EPSS

0.3%

p24

KEV

—

Exploit Today

0-100

Published: Mar 18, 2026 · Last modified: Jul 15, 2026 · CWE-345 · CWE-494 · CWE-693

EPSS · 30d

0.3%EPSS · 30 days0.3%

2026-08-152026-09-11

Technical 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.

Official references

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