CVE-2026-115920
Description
Open Neural Network Exchange (ONNX) is an open standard for machine learning interoperability. From 1.2.1 until 1.22.0, ConvTranspose shape inference processes a weight tensor with fewer than three dimensions without a kernel_shape attribute by deriving an empty effective_kernel_shape and indexing it for the input's spatial dimensions. The flaw affects convTransposeShapeInference_opset11() and the current inference path, and an untrusted model that can pass onnx.checker.check_model() can crash onnx.shape_inference.infer_shapes(), causing denial of service without demonstrated confidentiality or integrity impact. This issue is fixed in version 1.22.0.
How to fix
- onnx1.22.0 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| onnxPyPI | 1.2.1 ≤ v ≤ 1.21.0 | 1.22.0 |
| microsoft azl3_pytorch_2.2.2-17 | No range specified | — |
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