CVE-2026-27489

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.

Score

CVSS 4.0 8.7 High

Status

Modified - security-advisories@github.com

Published

2026-04-01

Last modified

2026-07-15

Weaknesses

CWE-22, CWE-23, CWE-61

Affected products

• Onnx (Linuxfoundation)
• Onnx (Onnx)
• Openshift Ai (Redhat)

References

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