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CVE-2026-28500: Open Neural Network Exchange (ONNX) is an open standard for machine learning interoperability

46
This month
HIGH 8.6REMOTEWATCHLISTUPGRADE

CVE-2026-28500 is a high-severity flaw (CVSS 8.6) affecting onnx. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Open Neural Network Exchange (ONNX) is an open standard for machine learning interoperability. In versions up to and including 1.20.1, a security control bypass exists in onnx.hub.load() due to improper logic in the repository trust verification mechanism. While the function is designed to warn users when loading models from non-official sources, the use of the silent=True parameter completely suppresses all security warnings and confirmation pro

Why this priority

  • High severity
  • Remotely exploitable, no login, no user action
  • On your watchlist

A fixed release or distro patch exists.

Risk facts

CVSS score8.6 (High)
Attack vectorNetwork (remote)
Attack complexityLow
Privileges neededNone
User interactionNone
EPSS exploit chance0.3% (top 75%)
CISA exploited listNo
WeaknessCWE-345, CWE-494, CWE-693, CWE-829
Published2026-03-18
Last modified2026-07-15
Publisher (CNA): GitHub, Inc. · Vendor: linuxfoundation

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Last updated 2026-07-15 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

linuxfoundation onnx UPGRADE
Affected: <= 1.20.1
Fixed in: newer than 1.20.1
Safe to downgrade to: no unaffected older release
1. Check installed version
apt-cache policy onnx || rpm -q onnx || onnx --version
2. UPGRADE to newer than 1.20.1 (Debian / Ubuntu)
sudo apt update && sudo apt install --only-upgrade onnx
2. UPGRADE (RHEL / Amazon Linux / Fedora)
sudo dnf upgrade onnx
Note
Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.
Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-28500?

onnx: upgrade to newer than 1.20.1. Exact commands for each OS are on this page.

Is CVE-2026-28500 being exploited?

CVE-2026-28500 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-28500 affect?

CVE-2026-28500 affects onnx. Severity is high (CVSS 8.6). Open Neural Network Exchange (ONNX) is an open standard for machine learning interoperability. In versions up to and including 1.20.1, a security control bypass exists in onnx.hub.load() due to improper logic in the repository trust verific

How urgent is CVE-2026-28500?

Priority 46/100. High severity; Remotely exploitable, no login, no user action; On your watchlist

Related CVEs

References

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