CVE-2026-44512 — Security Box Score

CVE · referencelatest edition

Reference page — cumulative record through Wednesday, August 19, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.

CVE-2026-44512MEDIUM

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

  AV  AC  PR  UI  S  C  I  A   CVSS    EPSS   %ile   KEV
   L   L   N   R  U  N  N  H    5.5   .0018    8.3     —

AFFECTED
  Product  Versions              Fixed
  onnx     >= 1.9.0, < 1.22.0 –  —

TIMELINE
  May 6   Reserved by GitHub_M
  Jul 8   EXPLOIT PUBLISHED — CVE-2026-44512 (onnx). Public exploit reference added.
  Jul 8   Published (CNA: GitHub_M)

CWE-476 · CNA: GitHub_M · CVSS v3.1 · 4 references · NVD status: Analyzed

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.

Lifecycle

Complete event history — 3 events, chronological
Date	Event	Detail
May 6, 2026	Reserved	Reserved by GitHub_M
July 8, 2026	EXPLOIT PUBLISHED	EXPLOIT PUBLISHED — CVE-2026-44512 (onnx). Public exploit reference added.
July 8, 2026	Published	Published (CNA: GitHub_M)

Affected

Affected products and packages — 1 row
Vendor	Product / Package	Ecosystem	Version introduced	Fixed
onnx	onnx	—	>= 1.9.0, < 1.22.0	—

Weaknesses

CWE-476

References (4)

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]

Authoritative record: CVE-2026-44512 at cve.org

Vendors: onnx

Weaknesses: CWE-476

About this page

This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2026-44512 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Wednesday, August 19, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.