{"action":"Upgrade onnx to 1.21.0rc1 or later.","affected":[{"fixed":"1.21.0rc1","introduced":"0"}],"component":"onnx","cve_ids":["CVE-2026-28500"],"ecosystem":"PyPI","epss":0.00323,"exploited":false,"fixed_versions":["1.21.0rc1"],"ghsa_id":"GHSA-hqmj-h5c6-369m","id":"tcs_01M5KGQ61ZENZRV1S1077PCCNN","modified_at":"2026-05-20T09:19:09.914699Z","published_at":"2026-03-18T02:16:24.227Z","references":["https://osv.dev/vulnerability/PYSEC-2026-103","https://github.com/onnx/onnx/security/advisories/GHSA-hqmj-h5c6-369m","https://github.com/ZeroXJacks/CVEs/blob/main/2026/CVE-2026-28500.md"],"severity":{"label":"critical","score":9.1},"sources":[{"source":"osv","source_id":"PYSEC-2026-103","url":"https://osv.dev/vulnerability/PYSEC-2026-103"}],"summary":"Open Neural Network Exchange (ONNX) is an open standard for machine learning interoperability. In versions up to and including 1.20.1, a security control bypass exists in onnx.hub.load() due to improp"}