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TI-2026-32442 Aliases CVE-2026-44512GHSA-hwpq-hmq9-wj77

ONNX: Null Pointer Dereference in Upsample Version Converter Adapter (Zero Inputs)

Priority MEDIUM 58CWE-476Published · Updated

Key facts

Attack vector
Local
Privileges required
None
User interaction
Required
Attack complexity
Low
Impact type
Denial of service
Confidentiality · integrity · availability
None · None · High
Fix status
Partial Red Hat: 1 without a fix

Attack profile from CVSS 3.1 · CNA. Fix status from CNA, GitHub and Red Hat. Impact type from CWE-476.

Summary

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.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00193 8th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix Partial onnx (onnx): 1.22.0onnx (PyPI): 1.22.0Red Hat: 1 without a fix

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
onnxonnx1.9.0 to before 1.22.01.22.0Patch availableCNA
—onnx (PyPI)1.9.0 to before 1.22.01.22.0Patch availableGHSA-hwpq-hmq9-wj77
  • onnx Vendoronnx Affected 1.9.0 to before 1.22.0 Fixed in 1.22.0 Patch available CNA
  • onnx (PyPI) Vendor— Affected 1.9.0 to before 1.22.0 Fixed in 1.22.0 Patch available GHSA-hwpq-hmq9-wj77

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:linuxfoundation:onnx:*:*:*:*:*:*:*:*1.9.0 to before 1.22.0Vulnerablebackstage
  • cpe:2.3:a:linuxfoundation:onnx:*:*:*:*:*:*:*:* Versions 1.9.0 to before 1.22.0 Vulnerable ·backstage

Remediation

  • Fix · CNA onnx (onnx) Fixed in 1.22.0
  • Fix · GHSA-hwpq-hmq9-wj77 onnx (PyPI) Fixed in 1.22.0 Advisory →

Vendor assessments

Red Hat

Red Hat rating: Moderate. Red Hat's page for this CVE →

ProductStatusPlan or fix
Red Hat OpenShift AI (RHOAI)AffectedNo fix yet: Fix deferred

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-44512
  2. 2026-10-03 Alias added: GHSA-hwpq-hmq9-wj77

References

Exploit 1

Patch 2

Other 3

  • TI-2026-22763 ONNX Untrusted Model Repository Warnings Suppressed by silent=True in onnx.hub.load() — Silent Supply-Chain Attack CVSS 3.1CRITICAL 9.1
  • TI-2026-21896 ONNX: Path Traversal via Symlink CVSS 4.0HIGH 8.7
  • TI-2024-07209 Arbitrary File Overwrite in onnx/onnx CVSS 3.1CRITICAL 9.1
  • TI-2024-04814 Arbitrary File Overwrite in download_model_with_test_data in onnx/onnx CVSS 3.1HIGH 8.8
  • TI-2026-36338 ONNX symlink-following and path-traversal arbitrary file write CVSS 4.0MEDIUM 6.8
  • TI-2026-26712 ONNX: External Data Symlink Traversal CVSS 3.1MEDIUM 5.5
See all 16 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences