{"action":"Upgrade onnx to 1.21.0 or later.","affected":[{"fixed":"1.21.0","introduced":"0"}],"component":"onnx","cve_ids":["CVE-2026-34447"],"ecosystem":"PyPI","epss":0.00258,"exploited":false,"fixed_versions":["1.21.0"],"ghsa_id":"GHSA-p433-9wv8-28xj","id":"tcs_01M5KGQ7T0XV99QWRMKMV79EYG","modified_at":"2026-05-20T09:19:09.984613Z","published_at":"2026-04-01T18:16:30.810Z","references":["https://osv.dev/vulnerability/PYSEC-2026-104","https://github.com/onnx/onnx/security/advisories/GHSA-p433-9wv8-28xj"],"severity":{"label":"medium","score":5.5},"sources":[{"source":"osv","source_id":"PYSEC-2026-104","url":"https://osv.dev/vulnerability/PYSEC-2026-104"}],"summary":"Open Neural Network Exchange (ONNX) is an open standard for machine learning interoperability. Prior to version 1.21.0, there is a symlink traversal vulnerability in external data loading allows readi"}