CVE-2026-34446: ONNX: Arbitrary File Read via ExternalData Hardlink Bypass in ONNX load

Overview

Severity

Medium (CVSS 4.7)

CVSS Vector

CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:N/A:N

Exploit Status

Not Exploited

Patch Tuesday

2026-Apr

Released

2026-04-09

EPSS Score

0.01% (percentile: 1.3%)

Affected Products (2)

Other

• 20972-17084
• 21103-17086

Revision History

• 2026-04-09: Information published.