CVE-2026-27489 | THREATINT

Description

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.

PUBLISHED Reserved 2026-02-19 | Published 2026-04-01 | Updated 2026-04-01 | Assigner GitHub_M

HIGH: 8.7CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N

Problem types

CWE-23: Relative Path Traversal

CWE-61: UNIX Symbolic Link (Symlink) Following

Product status

< 1.21.0

affected

References

github.com/onnx/onnx/security/advisories/GHSA-3r9x-f23j-gc73

github.com/...ommit/4755f8053928dce18a61db8fec71b69c74f786cb

cve.org (CVE-2026-27489)

nvd.nist.gov (CVE-2026-27489)

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