onnx

Open standard for machine learning interoperability

Version: 1.15.0 registry icon
Safety score
-95
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Security Risks of Known Vulnerabilities
CVE-2024-27318
CWE-22
Threat level: HIGH | CVSS score: 7.5

Versions of the package onnx before and including 1.15.0 are vulnerable to Directory Traversal as the external_data field of the tensor proto can have a path to the file which is outside the model current directory or user-provided directory. The vulnerability occurs as a bypass for the patch added for CVE-2022-25882.



CVE-2026-34447
CWE-22
Threat level: MEDIUM | CVSS score: 5.5

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.



CVE-2026-44512
CWE-476
Threat level: MEDIUM | CVSS score: 5.5

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.



CVE-2026-28500
CWE-345
Threat level: HIGH | CVSS score: 9.1

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 exfiltrate sensitive files (SSH keys, cloud credentials) from the victim's machine the moment the model is loaded. As of time of publication, no known patched versions are available.



CVE-2026-63632
CWE-125
Threat level: LOW | CVSS score: 2

Heap-buffer-overflow READ (16 bytes) in Gemm_7_6::adapt_gemm_7_6() (onnx/version_converter/adapters/gemm_7_6.h:41) when ConvertVersion() processes a model with a Gemm node whose input tensors have fewer than 2 dimensions. The adapter accesses B_shape[1] without checking rank. On Release builds the OOB read is silent; ASan confirms 16-byte read past a 48-byte allocation.



CVE-2026-27489
CWE-23
Threat level: HIGH | CVSS score: 7.5

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.



CVE-2026-34445
CWE-20
Threat level: HIGH | CVSS score: 8.6

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.



CVE-2024-27319
CWE-125
Threat level: HIGH | CVSS score: 9.1

Versions of the package onnx before and including 1.15.0 are vulnerable to Out-of-bounds Read as the ONNX_ASSERT and ONNX_ASSERTM functions have an off by one string copy.



CVE-2026-34446
CWE-22
Threat level: MEDIUM | CVSS score: 5.5

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.



Please note that this component is affected by 3 other vulnerabilities
0 Critical  |  3 High  |  0 Medium  |  0 Low  |  0 Suggest

Latest safe minor: 1.22.0rc2 Scan your application codebase with Meterian to see all known vulnerabilities in your open source software dependencies.


Stability

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Latest patch release:   --

Latest minor release:   1.22.0rc2

Latest major release:   --

Licensing

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Apache-2.0   -   Apache License 2.0

Not a wildcard

Not proprietary

OSI Compliant