CVE-2026-27489: Linuxfoundation Onnx

High severity, CVSS 7.5. EPSS: 0.6% 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, a path traversal vulnerability via symlink allows to read arbitrary files outside model or user-provided 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 2026-07-15.