CVE-2026-34445: Open Neural Network Exchange (ONNX) is an open standard for machine learning interoperability. Prior to version 1.21.0, the ExternalDataInfo class in ONNX was using Python’s setattr() function to l...

Added to the CISA Known Exploited Vulnerabilities catalog on 01 Apr 2026. Vendor: AI/ML. Product: machine learning. CVSS score: 8.6.

Open Neural Network Exchange (ONNX) is an open standard for machine learning interoperability. Prior to version 1.21.0, 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. It didn’t check if ...

Required action: Review and patch if applicable to your AI infrastructure.