CVE-2026-34446
Medium · 4.7CVSS
4.7
EPSS
0.2%
Published
Apr 1, 2026
CISA due date
—
The record
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.
Affected packages
| Ecosystem | Package | Introduced | Fixed |
|---|---|---|---|
| Chainguard | py3.10-onnx | 0 | 1.21.0-r0 |
| Chainguard | py3.11-onnx | 0 | 1.21.0-r0 |
| Chainguard | py3.12-onnx | 0 | 1.21.0-r0 |
| Chainguard | py3.13-onnx | 0 | 1.21.0-r0 |
| Wolfi | py3.10-onnx | 0 | 1.21.0-r0 |
| Wolfi | py3.11-onnx | 0 | 1.21.0-r0 |
| Wolfi | py3.12-onnx | 0 | 1.21.0-r0 |
| Wolfi | py3.13-onnx | 0 | 1.21.0-r0 |
Related vulnerabilities
- CVE-2026-34447 Open Neural Network Exchange (ONNX) is an open standard for machine learning… Also affects py3.10-onnx
- CVE-2026-34445 Open Neural Network Exchange (ONNX) is an open standard for machine learning… Also affects py3.10-onnx
- CVE-2026-28500 Open Neural Network Exchange (ONNX) is an open standard for machine learning… Also affects py3.10-onnx
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