CVE-2026-115921: Open Neural Network Exchange (ONNX) is an open standard for machine learning interoperability. From …
- Occurred
- Oct 26, 2026
- Published
- Oct 26, 2026
- Source
- NVD CVE
Summary
Open Neural Network Exchange (ONNX) is an open standard for machine learning interoperability. From 1.4.0 until 1.22.0, ScanInferenceFunction, ScanInferenceFunction_opset8, and ScanInferenceFunction_opset9 do not safely validate the required num_scan_inputs attribute. A missing attribute is dereferenced as a null pointer, while a negative value is converted to size_t and can reach an exceptional oversized allocation path. An untrusted model can therefore terminate or disrupt shape inference, including a negative-value model that can pass onnx.checker.check_model(). This issue is fixed in version 1.22.0.
Tags
- CVE
- CVE-2026-115921
- cvss:MEDIUM
Classification
Rationale: Software vulnerability in ONNX library causing potential denial of service, not fitting other specific AI safety categories.
Classifier: Qwen/Qwen3.5-35B-A3B-FP8