CVE-2026-34446

NameCVE-2026-34446
DescriptionOpen 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.
SourceCVE (at NVD; CERT, ENISA, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
onnx (PTS)bullseye1.7.0+dfsg-3vulnerable
bookworm1.12.0-2vulnerable
trixie1.17.0-3vulnerable
forky, sid1.20.0-4vulnerable

The information below is based on the following data on fixed versions.

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
onnxsource(unstable)(unfixed)

Notes

https://github.com/onnx/onnx/security/advisories/GHSA-cmw6-hcpp-c6jp
Fixed by: https://github.com/onnx/onnx/commit/4755f8053928dce18a61db8fec71b69c74f786cb

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