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CVE-2026-34445 Detail

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.


Metrics

NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.
CVSS 4.0 Severity and Vector Strings:

NIST CVSS score
NIST: NVD
N/A
NVD assessment not yet provided.

References to Advisories, Solutions, and Tools

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URL Source(s) Tag(s)
https://github.com/onnx/onnx/commit/e30c6935d67cc3eca2fa284e37248e7c0036c46b GitHub, Inc.
https://github.com/onnx/onnx/pull/7751 GitHub, Inc.
https://github.com/onnx/onnx/security/advisories/GHSA-538c-55jv-c5g9 GitHub, Inc.

Weakness Enumeration

CWE-ID CWE Name Source
CWE-20 Improper Input Validation GitHub, Inc.  
CWE-400 Uncontrolled Resource Consumption GitHub, Inc.  
CWE-915 Improperly Controlled Modification of Dynamically-Determined Object Attributes GitHub, Inc.  

Change History

1 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2026-34445
NVD Published Date:
04/01/2026
NVD Last Modified:
04/01/2026
Source:
GitHub, Inc.