Description
Open Neural Network Exchange (ONNX) is an open standard for machine learning interoperability. Prior to version 1.21.0, there is a symlink traversal vulnerability in external data loading allows reading files outside the model directory. This issue has been patched in version 1.21.0.
Scores
CVSS v3
5.5
EPSS
0.0001
EPSS Percentile
2.0%
Attack Vector
LOCAL
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
CISA SSVC
Vulnrichment
Exploitation
poc
Automatable
no
Technical Impact
partial
Details
CWE
CWE-22
CWE-61
Status
published
Products (3)
linuxfoundation/onnx
< 1.21.0
onnx/onnx
< 1.21.0
pypi/onnx
0 - 1.21.0PyPI
Published
Apr 01, 2026
Tracked Since
Apr 01, 2026