HIGH 7.5

PYSEC-2026-2239

Details

Open Neural Network Exchange (ONNX) is an open standard for machine learning interoperability. Prior to version 1.21.0, a path traversal vulnerability via symlink allows to read arbitrary files outside model or user-provided directory. This issue has been patched in version 1.21.0.

Are you affected?

Enter the version of the package you're using.

Affected packages

PyPI / onnx

Introduced in: 0 Fixed in: 1.21.0

Fix pip install --upgrade 'onnx>=1.21.0'

References

https://access.redhat.com/security/cve/CVE-2026-27489 [WEB]
https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-27489.json [WEB]
https://access.redhat.com/errata/RHSA-2026:24977 [ADVISORY]
https://bugzilla.redhat.com/show_bug.cgi?id=2453929 [REPORT]
https://github.com/onnx/onnx/commit/4755f8053928dce18a61db8fec71b69c74f786cb [FIX]
https://github.com/onnx/onnx/security/advisories/GHSA-3r9x-f23j-gc73 [FIX]