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onnx vulnerabilities

Vulnerabilities published for onnx in the last 30 days: 0. Listed in the KEV catalogue: 0.

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Vulnerabilities: 8

  1. CVE-2026-44512

    Medium · CVSS 5.5EPSS 0.19%No fix published

    ONNX: Null Pointer Dereference in Upsample Version Converter Adapter (Zero Inputs)

    Open Neural Network Exchange (ONNX) is an open standard for machine learning interoperability. From 1.9.0 before 1.22.0, onnx.version_converter.convert_version() can dereference a null pointer in Upsample_6_7::adapt_upsample_6_7() in onnx/version_converter/adapters/upsample_6_7.h when processing an untrusted model with an Upsample node that has zero inputs, causing an unrecoverable denial of service. This issue is fixed in version 1.22.0.

    Published Updated
  2. CVE-2026-14647

    Medium · CVSS 5.3EPSS 0.43%No fix published

    onnx onnxruntime old.cc convPoolShapeInference_opset19 out-of-bounds

    A weakness has been identified in onnx up to 1.21.x. This vulnerability affects the function convPoolShapeInference_opset19 of the file onnx/defs/nn/old.cc of the component onnxruntime. This manipulation causes out-of-bounds read. It is possible to initiate the attack remotely. The exploit has been made available to the public and could be used for attacks. Patch name: a7bf3a0f1d18bb62575236ef6e4944980c40e045. It is recommended to apply a patch to fix this issue.

    Published Updated
  3. CVE-2026-34447

    Medium · CVSS 5.5EPSS 0.26%No fix published

    ONNX: External Data Symlink Traversal

    Open Neural Network Exchange (ONNX) is an open standard for machine learning interoperability. Prior to version 1.21.0, there is a symlink traversal vulnerability in external data loading allows reading files outside the model directory. This issue has been patched in version 1.21.0.

    Published Updated
  4. CVE-2026-34446

    Medium · CVSS 4.7EPSS 0.18%No fix published

    ONNX: Arbitrary File Read via ExternalData Hardlink Bypass in ONNX load

    Open 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.

    Published Updated
  5. CVE-2026-27489

    High · CVSS 8.7EPSS 0.62%No fix published

    ONNX: Path Traversal via Symlink

    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 Updated
  6. CVE-2026-34445

    High · CVSS 8.6EPSS 0.29%No fix published

    ONNX: Malicious ONNX models can crash servers by exploiting unprotected object settings.

    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.

    Published Updated
  7. CVE-2026-28500

    High · CVSS 8.6EPSS 0.32%No fix published

    ONNX Untrusted Model Repository Warnings Suppressed by silent=True in onnx.hub.load() — Silent Supply-Chain Attack

    Open Neural Network Exchange (ONNX) is an open standard for machine learning interoperability. In versions up to and including 1.20.1, a security control bypass exists in onnx.hub.load() due to improper logic in the repository trust verification mechanism. While the function is designed to warn users when loading models from non-official sources, the use of the silent=True parameter completely suppresses all security warnings and confirmation prompts. This vulnerability transforms a standard model-loading function into a vector for Zero-Interaction Supply-Chain Attacks. When chained with file-system vulnerabilities, an attacker can silently e

    Published Updated

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