CVE-2026-34445: Open Neural Network Exchange (ONNX) is an open standard for machine learning interoperability. Prior to version 1.21.0,

ONNX (Open Neural Network Exchange, a standard format for sharing machine learning models) had a vulnerability in versions before 1.21.0 where it didn't properly validate data loaded from model files, allowing an attacker to craft a malicious model that could overwrite internal object properties. An attacker could exploit this by embedding specially crafted metadata (like file paths) into an ONNX model file that would be processed without proper checks.