CVE-2026-34445
8.6 · HIGHOverview
CVE-2026-34445 is a high-severity vulnerability affecting linuxfoundation onnx. It was published on April 1, 2026 and has a CVSS 3.1 base score of 8.6 (HIGH).
This vulnerability has a CVSS 3.1 base score of 8.6, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
Technical Description
Open Neural Network Exchange (ONNX) is an open standard for machine learning interoperability. Prior to version 1.21.0, the ExternalDataInfo class in ONNX was using Python’s setattr() function to load metadata (like file paths or data lengths) directly from an ONNX model file. It didn’t check if the "keys" in the file were valid. Due to this, an attacker could craft a malicious model that overwrites internal object properties. This issue has been patched in version 1.21.0.
Remediation
Check the references section for vendor advisories and patches from linuxfoundation. Update onnx to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
Affected Products
| Vendor | Product | Versions | Status |
|---|---|---|---|
| linuxfoundation | onnx | >= 0, < 1.21.0 | Affected |
Frequently Asked Questions
What is CVE-2026-34445?
CVE-2026-34445 is a high-severity vulnerability affecting linuxfoundation onnx. It was published on April 1, 2026 and has a CVSS 3.1 base score of 8.6 (HIGH).
How severe is CVE-2026-34445?
This vulnerability has a CVSS 3.1 base score of 8.6, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
How do I fix or remediate CVE-2026-34445?
Check the references section for vendor advisories and patches from linuxfoundation. Update onnx to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
How can CyberStrike help with CVE-2026-34445?
CyberStrike's AI-powered security agents can automatically detect CVE-2026-34445 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.
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