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CVE-2026-27489

HIGH CVSS 4.0: 8.7 EPSS 0.07%
Updated Apr 07, 2026
Linuxfoundation
Parameter Value
CVSS 8.7 (HIGH)
Affected Versions before 1.21.0
Fixed In 1.21.0
Type CWE-61 (UNIX Symlink Following), CWE-23 (Relative Path Traversal)
Vendor Linuxfoundation
Public PoC No

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.

Attack Parameters

Attack Vector
Network
Can be exploited remotely
Attack Complexity
Low
Easy to exploit
Attack Requirements
None
No additional conditions
Privileges Required
None
No privileges needed
User Interaction
None
No user interaction needed

Impact Assessment

Confidentiality
High
Complete data leak
Integrity
None
No data modification
Availability
None
No disruption

CVSS Vector v4.0

Vulnerable Products 1

Configuration From (including) Up to (excluding)
Linuxfoundation Onnx
cpe:2.3:a:linuxfoundation:onnx:*:*:*:*:*:*:*:*
1.21.0