CVSS 3.1
5.5 mediumCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:HCVE-2026-44512
Medium (5.5) in linuxfoundation onnx. EPSS 0.2% chance of exploitation in the next 30 days. Fixed in onnx 1.22.0.
Open Neural Network Exchange (ONNX) is an open standard for machine learning interoperability. From 1.9.0 before 1.22.0, onnx.version_converter.convert_version() can dereference a null pointer in Upsample_6_7::adapt_upsample_6_7() in onnx/version_converter/adapters/upsample_6_7.h when processing an untrusted model with an Upsample node that has zero inputs, causing an unrecoverable denial of service. This issue is fixed in version 1.22.0.
Severity
- EPSS
- 0.2% chance of exploitation in the next 30 days; higher than 8% of CVEs (scores of 2026-10-31)
- CWE
- CWE-476
- Published
- Modified
- Record from
- the NVD, synced
Affected
- linuxfoundation:onnx
Packages (OSV)
| Advisory | Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|---|
| GHSA-hwpq-hmq9-wj77 | PyPI | onnx | >=1.9.0 <1.22.0 | 1.22.0 |
| PYSEC-2026-2689 | PyPI | onnx | >=1.9.0 <1.22.0 | 1.22.0 |