CVE-2026-27489

HIGH EPSS 40.3%
Published Apr 1, 20263mo ago · Modified Jun 17, 20261w ago
8.7 CVSS 4.0
High
Find Similar
Published Apr 1, 2026 3mo ago
Last Modified Jun 17, 2026 1w ago

Description

Open Neural Network Exchange (ONNX) is an open standard for machine learning interoperability. Prior to version 1.21.0, a path traversal vulnerability via symlink allows to read arbitrary files outside model or user-provided directory. This issue has been patched in version 1.21.0.

CVSS Details

Base Score
8.7
Exploitability
—
Impact
—
Vector string
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope X

Threat Intelligence

EPSS Exploit Probability
40.3% percentile
Exploit & Patch Status
Public Exploit Known
Patch Available

Weaknesses 2

CWE-23
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-3r9x-f23j-gc73
    ExploitMitigationPatchVendor Advisory

Remediation

  • github.com https://github.com/onnx/onnx/commit/4755f8053928dce18a61db8fec71b69c74f786cb
    Patch
  • github.com https://github.com/onnx/onnx/security/advisories/GHSA-3r9x-f23j-gc73
    ExploitMitigationPatchVendor Advisory