CVE-2026-34447 — Path Traversal in Onnx

CWE-22 — Path TraversalCWE-61 — UNIX Symbolic Link (Symlink) Following7 documents5 sources
Severity
5.5MEDIUMNVD
EPSS
0.0%
top 98.87%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
2
OnnxDebian Onnx
Timeline
PublishedApr 1
Latest updateApr 2

Description

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. This issue has been patched in version 1.21.0.

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:NExploitability: 1.8 | Impact: 3.6

Affected Packages3 packages

▶CVEListV5onnx/onnx< 1.21.0
▶PyPIonnx/onnx< 1.21.0
▶debiandebian/onnx

🔴Vulnerability Details

4
OSV
CVE-2026-34447: (Open Neural Network Exchange (ONNX) is an open standard for machine le↗2026-04-02
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OSV
CVE-2026-34447: Open Neural Network Exchange (ONNX) is an open standard for machine learning interoperability↗2026-04-01
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OSV
ONNX: External Data Symlink Traversal↗2026-04-01
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GHSA
ONNX: External Data Symlink Traversal↗2026-04-01
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📋Vendor Advisories

1
Debian
CVE-2026-34447: onnx - Open Neural Network Exchange (ONNX) is an open standard for machine learning int...↗2026
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🕵️Threat Intelligence

1
Wiz
CVE-2026-34447 Impact, Exploitability, and Mitigation Steps | Wiz↗
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