CVE-2026-34445: ONNX: Malicious ONNX models can crash servers by exploiting unprotected object settings.

The ExternalDataInfo class in ONNX was using Python’s setattr() function to load metadata (like file paths or data lengths) directly from an ONNX model file. The problem? It didn’t check if the “keys” in the file were valid. Because it blindly trusted the file, an attacker could craft a malicious model that overwrites internal object properties.