CVE-2026-44512: Open Neural Network Exchange (ONNX) is an open standard for machine learning interoperability
Affects onnxSource GCVE Database
Not known to be exploited · CVSS 5.5 Medium · fixed in 1.22.0 : update onnx when convenient.
Data as of 30 Oct 2026, 11:52 UTC
- EPSS
- 0.1% chance of exploitation in 30 days – higher than 8% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
- Patch
- Available – fixed in 1.22.0
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:HExploitation evidence
Disclosed: evidence found.
CVE published 8 Jul 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 30 Oct 2026.
What to do
Affected software
| Product | Affected | Fixed in |
|---|---|---|
Ubuntu 26.10onnxpkg:deb/ubuntu/onnx?arch=source&distro=stonkingOther threats | Affected
| Fixed in– |
Ubuntu 26.04 LTSonnxpkg:deb/ubuntu/onnx?arch=source&distro=resoluteOther threats | Affected
| Fixed in– |
Ubuntu 25.10onnxpkg:deb/ubuntu/onnx?arch=source&distro=questingOther threats | Affected
| Fixed in– |
Ubuntu Pro 24.04 LTSonnxpkg:deb/ubuntu/onnx?arch=source&distro=esm-apps/nobleOther threats | Affected
| Fixed in– |
Ubuntu 22.04 LTSonnxpkg:deb/ubuntu/onnx?arch=source&distro=jammyOther threats | Affected
| Fixed in– |
Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.
AI-suggested
Upgrade to ONNX version 1.22.0 or later, where this vulnerability is fixed. No other mitigation is indicated or required.
Description
A denial of service vulnerability exists in the Open Neural Network Exchange (ONNX) library versions from 1.9.0 up to but not including 1.22.0. The issue occurs due to a null pointer dereference in the Upsample node processing when onnx.version_converter.convert_version() handles an untrusted model containing an Upsample node with zero inputs, causing the application to crash. This vulnerability is fixed in version 1.22.0.
References
- ubuntu.com/security/CVE-2026-44512 (opens in a new tab)
- cve.org/CVERecord?id=CVE-2026-44512 (opens in a new tab)
- github.com/onnx/onnx/commit/cd310408165ad47c3cd7eb2b86cb5b80aa2e4fdf (opens in a new tab)
- github.com/onnx/onnx/pull/7813 (opens in a new tab)
- github.com/onnx/onnx/releases/tag/v1.22.0 (opens in a new tab)
- github.com/onnx/onnx/security/advisories/GHSA-hwpq-hmq9-wj77 (opens in a new tab)