Medium severity4.7NVD Advisory· Published Apr 1, 2026· Updated Apr 15, 2026
CVE-2026-34446
CVE-2026-34446
Description
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.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
onnxPyPI | < 1.21.0 | 1.21.0 |
Affected products
10- osv-coords9 versionspkg:apk/chainguard/py3.10-onnxpkg:apk/chainguard/py3.11-onnxpkg:apk/chainguard/py3.12-onnxpkg:apk/chainguard/py3.13-onnxpkg:apk/wolfi/py3.10-onnxpkg:apk/wolfi/py3.11-onnxpkg:apk/wolfi/py3.12-onnxpkg:apk/wolfi/py3.13-onnxpkg:pypi/onnx
< 1.21.0-r0+ 8 more
- (no CPE)range: < 1.21.0-r0
- (no CPE)range: < 1.21.0-r0
- (no CPE)range: < 1.21.0-r0
- (no CPE)range: < 1.21.0-r0
- (no CPE)range: < 1.21.0-r0
- (no CPE)range: < 1.21.0-r0
- (no CPE)range: < 1.21.0-r0
- (no CPE)range: < 1.21.0-r0
- (no CPE)range: < 1.21.0
Patches
Vulnerability mechanics
References
4- github.com/onnx/onnx/commit/4755f8053928dce18a61db8fec71b69c74f786cbnvdPatchWEB
- github.com/advisories/GHSA-cmw6-hcpp-c6jpghsaADVISORY
- github.com/onnx/onnx/security/advisories/GHSA-cmw6-hcpp-c6jpnvdVendor AdvisoryWEB
- nvd.nist.gov/vuln/detail/CVE-2026-34446ghsaADVISORY
News mentions
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