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CVE-2026-34445

CVE-2026-34445 · ONNX: Malicious ONNX models can crash servers by exploiting unprotected object settings.

This page contains facts from public vulnerability sources. Check the original advisory before updating.

Open Neural Network Exchange (ONNX) is an open standard for machine learning interoperability. Prior to version 1.21.0, the ExternalDataInfo class in ONNX was using Python’s setattr() function to load metadata (like file paths or data lengths) directly from an ONNX model file. It didn’t check if the "keys" in the file were valid. Due to this, an attacker could craft a malicious model that overwrites internal object properties. This issue has been patched in version 1.21.0.

CVSS 8.6 · High · EPSS 0.3% · Fix available

Published
Updated

Stack: system · python

Affected products and versions

  • onnx

    Versions
    • < 1.21.0: Affected

    No fix published

  • onnx Debian:12

    Versions
    • 1.12.0-2
    • 1.13.1-1
    • 1.13.1-2
    • 1.13.1-3
    • 1.14.1-1
    • 1.14.1-2
    • 1.14.1-2.1
    • 1.14.1-2.1~exp1
    • 1.16.1-1
    • 1.16.2-1
    • 1.17.0-1
    • 1.17.0-2
    • 1.17.0-3
    • 1.19.1-1~exp1
    • 1.20.0-1
    • 1.20.0-1~exp1
    • 1.20.0-3
    • 1.20.0-4
    • 1.20.0-5
    • 1.20.0-6
    • 1.21.0-1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • onnx Debian:13

    Versions
    • 1.17.0-3
    • 1.19.1-1~exp1
    • 1.20.0-1
    • 1.20.0-1~exp1
    • 1.20.0-3
    • 1.20.0-4
    • 1.20.0-5
    • 1.20.0-6
    • 1.21.0-1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • onnx Debian:14

    Versions
    • 1.17.0-3
    • 1.19.1-1~exp1
    • 1.20.0-1
    • 1.20.0-1~exp1
    • 1.20.0-3
    • 1.20.0-4
    • 1.20.0-5
    • 1.20.0-6
    • 1.21.0-1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • onnx PyPI

    Versions
    • 0.1
    • 0.2
    • 0.2.1
    • 1.0.0
    • 1.0.1
    • 1.1.0
    • 1.1.1
    • 1.1.2
    • 1.10.0
    • 1.10.1
    • 1.10.2
    • 1.11.0
    • 1.12.0
    • 1.13.0
    • 1.13.1
    • 1.14.0
    • 1.14.1
    • 1.15.0
    • 1.16.0
    • 1.16.1
    • 1.16.2
    • 1.17.0
    • 1.18.0
    • 1.19.0
    • 1.19.1
    • 1.19.1rc1
    • 1.2.1
    • 1.2.2
    • 1.2.3
    • 1.20.0
    • 1.20.0rc1
    • 1.20.0rc2
    • 1.20.1
    • 1.20.1rc1
    • 1.21.0rc1
    • 1.21.0rc2
    • 1.21.0rc3
    • 1.21.0rc4
    • 1.3.0
    • 1.4.0
    • 1.4.1
    • 1.5.0
    • 1.6.0
    • 1.7.0
    • 1.8.0
    • 1.8.1
    • 1.9.0
    Affected ranges
    • ECOSYSTEM: < 1.21.0

    Update to 1.21.0

  • onnx Ubuntu:22.04:LTS

    Versions
    • 1.7.0+dfsg-3build1
    • 1.7.0+dfsg-3build2
    • 1.7.0+dfsg-3ubuntu1
    • 1.7.0+dfsg-3ubuntu2
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • onnx Ubuntu:Pro:24.04:LTS

    Versions
    • 1.13.1-3
    • 1.13.1-3build1
    • 1.14.1-2
    • 1.14.1-2.1
    • 1.14.1-2.1build1
    • 1.14.1-2.1build2
    • 1.14.1-2.1ubuntu0.1~esm1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • onnx Ubuntu:25.10

    Versions
    • 1.17.0-3build1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • onnx Ubuntu:26.10

    Versions
    • 1.20.0-1
    • 1.20.0-6
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • onnx Ubuntu:26.04:LTS

    Versions
    • 1.17.0-3build1
    • 1.20.0-1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

Original sources

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