UNIX Symbolic Link (Symlink) Following Affecting onnx package, versions [,1.21.0)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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- published2 Apr 2026
- disclosed1 Apr 2026
- creditZeroXJacks
Introduced: 1 Apr 2026
CVE-2026-34446 (opens in a new tab)How to fix?
Upgrade onnx to version 1.21.0 or higher.
Overview
onnx is an Open Neural Network Exchange
Affected versions of this package are vulnerable to UNIX Symbolic Link (Symlink) Following via the onnx.load function. An attacker can access arbitrary files on the filesystem by supplying a malicious model that leverages hardlinks to bypass security checks intended to prevent unauthorized file access.