CVE-2026-34447: Linuxfoundation Onnx

Medium severity, CVSS 5.5. EPSS: 0.2% chance of exploitation in the next 30 days.

Open Neural Network Exchange (ONNX) is an open standard for machine learning interoperability. Prior to version 1.21.0, there is a symlink traversal vulnerability in external data loading allows reading files outside the model directory. This issue has been patched in version 1.21.0.

Affected products

• Linuxfoundation Onnx: before 1.21.0 (fixed in 1.21.0)

Published 2026-04-01. Last modified 2026-06-17.