{"cve":"CVE-2026-28500","nvd":{"published":"2026-03-18T02:16:24.227","modified":"2026-07-15T02:19:15.327","status":"Modified","description":"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 improper logic in the repository trust verification mechanism. While the function is designed to warn users when loading models from non-official sources, the use of the silent=True parameter completely suppresses all security warnings and confirmation prompts. This vulnerability transforms a standard model-loading function into a vector for Zero-Interaction Supply-Chain Attacks. When chained with file-system vulnerabilities, an attacker can silently exfiltrate sensitive files (SSH keys, cloud credentials) from the victim's machine the moment the model is loaded. As of time of publication, no known patched versions are available.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N","score":9.1},"cwes":["CWE-345","CWE-494","CWE-693","CWE-829"],"references":["https://github.com/ZeroXJacks/CVEs/blob/main/2026/CVE-2026-28500.md","https://github.com/onnx/onnx/security/advisories/GHSA-hqmj-h5c6-369m","https://access.redhat.com/errata/RHSA-2026:24977","https://access.redhat.com/security/cve/CVE-2026-28500","https://bugzilla.redhat.com/show_bug.cgi?id=2448518"],"products":["linuxfoundation:onnx"],"source":"nvd","synced_at":"2026-10-19T22:26:19.218427112+00:00"},"epss":{"cve":"CVE-2026-28500","score":0.00323,"percentile":0.25403,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-hqmj-h5c6-369m","url":"https://osv.dev/vulnerability/GHSA-hqmj-h5c6-369m","summary":"ONNX Untrusted Model Repository Warnings Suppressed by silent=True in onnx.hub.load() — Silent Supply-Chain Attack","modified":"2026-09-10T03:50:39.607200051Z","packages":[{"ecosystem":"PyPI","name":"onnx","purl":"pkg:pypi/onnx","ranges":["<1.21.0rc1"],"fixed":["1.21.0rc1"]}]},{"id":"PYSEC-2026-103","url":"https://osv.dev/vulnerability/PYSEC-2026-103","summary":"","modified":"2026-05-20T09:19:09.914699Z","packages":[{"ecosystem":"PyPI","name":"onnx","purl":"pkg:pypi/onnx","ranges":["<1.21.0rc1"],"fixed":["1.21.0rc1"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}