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ONNX symlink-following and path-traversal arbitrary file write

🗓️ 21 Aug 2026 15:41:33Reported by Industrial Control Systems Cyber Emergency Response TeamType 
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Symlink-following in ONNX before 1.21.0 enables local arbitrary file write via save_external_data.

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21 Aug 2026 15:41Current
5.4Medium risk
Vulners AI Score5.4
CVSS 46.8
CVSS 3.17.1
EPSS0.00109
SSVC
4