CVE-2026-34446: Open Neural Network Exchange (ONNX) is an open standard for machine learning interoperability. Prior to version 1.21.0, there is an issue in onnx.load, the code checks for symlinks to prevent path ...

Added to the CISA Known Exploited Vulnerabilities catalog on 01 Apr 2026. Vendor: AI/ML. Product: machine learning. CVSS score: 4.7.

Open Neural Network Exchange (ONNX) is an open standard for machine learning interoperability. Prior to version 1.21.0, there is an issue in onnx.load, the code checks for symlinks to prevent path traversal, but completely misses hardlinks because a hardlink looks exactly like a regular file on t...

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