CVE-2026-44512
ONNX: Null Pointer Dereference in Upsample Version Converter Adapter (Zero Inputs)
Description
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.
INFO
Published Date :
July 8, 2026, 8:16 p.m.
Last Modified :
July 13, 2026, 5:02 p.m.
Remotely Exploit :
No
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS | 134c704f-9b21-4f2e-91b3-4a467353bcc0 | |||||
| CVSS 3.1 | MEDIUM | [email protected] |
Solution
- Update ONNX to version 1.22.0 or later.
- Avoid processing untrusted models with Upsample nodes.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-44512.
| URL | Resource |
|---|---|
| https://github.com/onnx/onnx/commit/cd310408165ad47c3cd7eb2b86cb5b80aa2e4fdf | Patch |
| https://github.com/onnx/onnx/pull/7813 | Issue Tracking Patch |
| https://github.com/onnx/onnx/releases/tag/v1.22.0 | Product Release Notes |
| https://github.com/onnx/onnx/security/advisories/GHSA-hwpq-hmq9-wj77 | Exploit Vendor Advisory |
| https://github.com/onnx/onnx/security/advisories/GHSA-hwpq-hmq9-wj77 | Exploit Vendor Advisory |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-44512 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-44512
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-44512 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-44512 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
Initial Analysis by [email protected]
Jul. 13, 2026
Action Type Old Value New Value Added CPE Configuration OR *cpe:2.3:a:linuxfoundation:onnx:*:*:*:*:*:*:*:* versions from (including) 1.9.0 up to (excluding) 1.22.0 Added Reference Type GitHub, Inc.: https://github.com/onnx/onnx/commit/cd310408165ad47c3cd7eb2b86cb5b80aa2e4fdf Types: Patch Added Reference Type GitHub, Inc.: https://github.com/onnx/onnx/pull/7813 Types: Issue Tracking, Patch Added Reference Type GitHub, Inc.: https://github.com/onnx/onnx/releases/tag/v1.22.0 Types: Product, Release Notes Added Reference Type GitHub, Inc.: https://github.com/onnx/onnx/security/advisories/GHSA-hwpq-hmq9-wj77 Types: Exploit, Vendor Advisory Added Reference Type CISA-ADP: https://github.com/onnx/onnx/security/advisories/GHSA-hwpq-hmq9-wj77 Types: Exploit, Vendor Advisory -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Jul. 09, 2026
Action Type Old Value New Value Added Reference https://github.com/onnx/onnx/security/advisories/GHSA-hwpq-hmq9-wj77 Added SSVC {'id': 'CVE-2026-44512', 'role': 'CISA Coordinator', 'options': [{'exploitation': 'poc'}, {'automatable': 'no'}, {'technicalImpact': 'partial'}], 'version': '2.0.3', 'timestamp': '2026-07-09T13:36:51.723168Z'} -
New CVE Received by [email protected]
Jul. 08, 2026
Action Type Old Value New Value Added Affected [{'vendor': 'onnx', 'product': 'onnx', 'versions': [{'status': 'affected', 'version': '>= 1.9.0, < 1.22.0'}]}] Added Description 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. Added CVSS V3.1 AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H Added CWE CWE-476 Added Reference https://github.com/onnx/onnx/commit/cd310408165ad47c3cd7eb2b86cb5b80aa2e4fdf Added Reference https://github.com/onnx/onnx/pull/7813 Added Reference https://github.com/onnx/onnx/releases/tag/v1.22.0 Added Reference https://github.com/onnx/onnx/security/advisories/GHSA-hwpq-hmq9-wj77