CVE-2026-34446
Fixed in a distro release EPSS <1%CVSS 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 the filesystem. This issue has been patched in version 1.21.0.
Products: onnx
Fixed upstream
| Ecosystem | Package | Fixed in |
|---|---|---|
| PyPI | onnx | 1.21.0 |
Distro releases
| Release | Package | Fixed in |
|---|---|---|
| Chainguard | py3.10-onnx | 1.21.0-r0 |
| Chainguard | py3.11-onnx | 1.21.0-r0 |
| Chainguard | py3.12-onnx | 1.21.0-r0 |
| Chainguard | py3.13-onnx | 1.21.0-r0 |
| Debian 12 | onnx | no fix |
| Debian 13 | onnx | no fix |
| Debian 14 | onnx | no fix |
| Ubuntu 22.04 LTS | onnx | no fix |
| Ubuntu 25.10 | onnx | no fix |
| Ubuntu 26.04 LTS | onnx | no fix |
| Ubuntu 26.10 | onnx | no fix |
| Ubuntu Pro 24.04 LTS | onnx | no fix |