CVE-2026-27489highCWE-22CWE-23CWE-61

CVE-2026-27489: high-severity vulnerability in onnx

ONNX: Path Traversal via Symlink

Published · Updated

Follow this CVE+ Monitor onnx+ Monitor onnx

E-mail alert when it lands in KEV, gets a public PoC or its score goes up.

21Vexday Risk Score

No sign of exploitation. No public exploitation artifact known so far.

ssvc Trackcvss 8.7epss 0.6%
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:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
Affected products
onnx · onnx
Related CVEs — onnx

In the same product, most dangerous first.

CVE-2024-27318HIGHCVE-2024-27318EPSS 1.2%CVE-2024-27319MEDIUMCVE-2024-27319EPSS 0.6%CVE-2026-28500HIGHONNX Untrusted Model Repository Warnings Suppressed by silent=True in onnx.hub.load() — Silent Supply-Chain AttackEPSS 0.3%CVE-2026-34445HIGHONNX: Malicious ONNX models can crash servers by exploiting unprotected object settings.EPSS 0.3%CVE-2026-34447MEDIUMONNX: External Data Symlink TraversalEPSS 0.3%CVE-2026-44512MEDIUMONNX: Null Pointer Dereference in Upsample Version Converter Adapter (Zero Inputs)EPSS 0.2%