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CVE-2026-34445

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

Description (CNA)

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 (CNA)

Vendor / productVersions
onnx / onnxaffected < 1.21.0

CWE

CWE-20, CWE-400, CWE-915

References

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.