NVD - CVE-2026-34445 (original) (raw)
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
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CVSS 4.0 Severity and Vector Strings:
NIST: NVD
N/A
NVD assessment not yet provided.
CVSS 3.x Severity and Vector Strings:
NIST: NVD
Base Score: N/A
NVD assessment not yet provided.
CNA: GitHub, Inc.
Base Score: 8.6 HIGH
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H
CVSS 2.0 Severity and Vector Strings:
NIST: NVD
Base Score: 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. | Patch |
| https://github.com/onnx/onnx/pull/7751 | GitHub, Inc. | Issue Tracking Patch |
| https://github.com/onnx/onnx/security/advisories/GHSA-538c-55jv-c5g9 | GitHub, Inc. | Patch Vendor Advisory |
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. |
Known Affected Software Configurations Switch to CPE 2.2
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Change History
2 change records found show changes
Initial Analysis by NIST 4/15/2026 11:08:13 AM
| Action | Type | Old Value | New Value |
|---|---|---|---|
| Added | CPE Configuration | OR *cpe:2.3:a:linuxfoundation:onnx:*:*:*:*:*:*:*:* versions up to (excluding) 1.21.0 | |
| Added | Reference Type | GitHub, Inc.: https://github.com/onnx/onnx/commit/e30c6935d67cc3eca2fa284e37248e7c0036c46b Types: Patch | |
| Added | Reference Type | GitHub, Inc.: https://github.com/onnx/onnx/pull/7751 Types: Issue Tracking, Patch | |
| Added | Reference Type | GitHub, Inc.: https://github.com/onnx/onnx/security/advisories/GHSA-538c-55jv-c5g9 Types: Patch, Vendor Advisory |
New CVE Received from GitHub, Inc. 4/01/2026 2:16:30 PM
| Action | Type | Old Value | New Value |
|---|---|---|---|
| Added | 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. | |
| Added | CVSS V3.1 | AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H | |
| Added | CWE | CWE-20 | |
| Added | CWE | CWE-400 | |
| Added | CWE | CWE-915 | |
| Added | Reference | https://github.com/onnx/onnx/commit/e30c6935d67cc3eca2fa284e37248e7c0036c46b | |
| Added | Reference | https://github.com/onnx/onnx/pull/7751 | |
| Added | Reference | https://github.com/onnx/onnx/security/advisories/GHSA-538c-55jv-c5g9 |
Quick Info
CVE Dictionary Entry:
CVE-2026-34445
NVD Published Date:
04/01/2026
NVD Last Modified:
04/15/2026
Source:
GitHub, Inc.