CVSS 3.1
5.5 mediumCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:NCVE-2026-34446
Medium (5.5) in linuxfoundation onnx. EPSS 0.2% chance of exploitation in the next 30 days. Fixed in onnx 1.21.0.
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.
Severity
- EPSS
- 0.2% chance of exploitation in the next 30 days; higher than 7% of CVEs (scores of 2026-10-31)
- CWEs
- CWE-22, CWE-61
- Published
- Modified
- Record from
- the NVD, synced
Affected
- linuxfoundation:onnx
Packages (OSV)
| Advisory | Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|---|
| GHSA-cmw6-hcpp-c6jp | PyPI | onnx | <1.21.0 | 1.21.0 |
| PYSEC-2026-2241 | PyPI | onnx | <1.21.0 | 1.21.0 |