Findings

CVE-2026-27489

Open Neural Network Exchange (ONNX) is an open standard for machine learning interoperability.

Published Apr 1, 2026 · updated Jul 15, 2026 · linuxfoundation onnx

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.

Code

The project this record applies to. Exploit listings stay in References.

Timeline

Detection, updates, and resolution for this record.

  1. Apr 1, 2026 · NIST NVD

    Detected

    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.

  2. Jul 15, 2026 · NIST NVD

    Updated

    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.

Affected

  • cpe linuxfoundation/onnxversion unspecified

Sources

  • CVE.orgVulnerability recordCVE-2026-27489

    Official CVE identifier

    cve.org
  • NIST NVDVulnerability recordCVE-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.

    nvd.nist.gov

References