What is CVE-2026-34447?

CVE-2026-34447 is a medium-severity vulnerability in Onnx, classified under UNIX Symbolic Link (Symlink) Following. CVSS score: 5.5/10. Published 2026-04-01.

How severe is CVE-2026-34447?

Medium severity. CVSS v3 base score is 5.5 out of 10.

Path Traversal in Onnx

CVE-2026-34447

Open Neural Network Exchange (ONNX) is an open standard for machine learning interoperability. Prior to version 1.21.0, there is a symlink traversal vulnerability in external data loading allows reading files outside the model directory. T…

EPSS: 0.000 (0.3th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N.

Affected products

Onnx — versions < 1.21.0

Weakness classification (CWE)

CWE-61 — UNIX Symbolic Link (Symlink) Following
CWE-22 — Path Traversal

References

https://github.com/onnx/onnx/security/advisories/GHSA-p433-9wv8-28xj (x_refsource_CONFIRM)

Frequently asked questions

What is CVE-2026-34447?: CVE-2026-34447 is a medium-severity vulnerability in Onnx, classified under UNIX Symbolic Link (Symlink) Following. CVSS score: 5.5/10. Published 2026-04-01.
How severe is CVE-2026-34447?: Medium severity. CVSS v3 base score is 5.5 out of 10.