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8.6 High

CVE-2026-34445 Open Neural Network Exchange (ONNX) is an open standard for machine learning interoperability

Description

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.

Affected products and versions

Product Affected versions Fixed in
onnx 1.21 earliest → < 1.21.0 1.21.0

References

Timeline

  1. Published
  2. Last modified

Other CVEs of onnx

The 14 CVEs of onnx →
CVE-2026-115922 Open Neural Network Exchange (ONNX) is an open standard for machine learning interoperability 6.2 Medium CVE-2026-115921 Open Neural Network Exchange (ONNX) is an open standard for machine learning interoperability 6.2 Medium CVE-2026-115920 Open Neural Network Exchange (ONNX) is an open standard for machine learning interoperability 6.2 Medium CVE-2026-115919 Open Neural Network Exchange (ONNX) is an open standard for machine learning interoperability 6.2 Medium
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