CVE-2026-34446

MEDIUM EPSS 7.3%
Published Apr 1, 20263mo ago · Modified Jun 17, 20262w ago
5.5 CVSS 3.1
Medium
Find Similar
Published Apr 1, 2026 3mo ago
Last Modified Jun 17, 2026 2w ago

Description

Open Neural Network Exchange (ONNX) is an open standard for machine learning interoperability. Prior to version 1.21.0, there is an issue in onnx.load, the code checks for symlinks to prevent path traversal, but completely misses hardlinks because a hardlink looks exactly like a regular file on the filesystem. This issue has been patched in version 1.21.0.

CVSS Details

Base Score
5.5
Exploitability
1.8
Impact
3.6
Vector string
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
Attack Vector Local
Attack Complexity Low
Privileges Required None
User Interaction Required
Scope Unchanged
Confidentiality High
Integrity None
Availability None

Threat Intelligence

EPSS Exploit Probability
7.3% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Weaknesses 2

CWE-22 Path Traversal Resource Mgmt
CWE-61

Affected Products 1

VendorProductVersionRange
linuxfoundationonnx* <1.21.0

References 2

  • github.com https://github.com/onnx/onnx/commit/4755f8053928dce18a61db8fec71b69c74f786cb
    Patch
  • github.com https://github.com/onnx/onnx/security/advisories/GHSA-cmw6-hcpp-c6jp
    Vendor Advisory

Remediation

  • github.com https://github.com/onnx/onnx/commit/4755f8053928dce18a61db8fec71b69c74f786cb
    Patch