Path traversal in onnx - CVE-2026-34446
Published: April 27, 2026
Vulnerability identifier: #VU128170
CSH Severity: Medium
CVSS v4: 5.9 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-34446
CWE-ID: CWE-22
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to disclose sensitive information.
The vulnerability exists due to improper limitation of a pathname to a restricted directory in onnx.load when processing a crafted model with external data hardlinks. A remote attacker can supply a specially crafted model file to disclose sensitive information.
User interaction is required to load the crafted model.
Affected software
onnx
How to mitigate CVE-2026-34446
Install security update from vendor's website.
onnx - update to 1.21.0