{"cve":"CVE-2026-44512","nvd":{"published":"2026-07-08T20:16:49.913","modified":"2026-07-13T17:02:01.533","status":"Analyzed","description":"Open Neural Network Exchange (ONNX) is an open standard for machine learning interoperability. From 1.9.0 before 1.22.0, onnx.version_converter.convert_version() can dereference a null pointer in Upsample_6_7::adapt_upsample_6_7() in onnx/version_converter/adapters/upsample_6_7.h when processing an untrusted model with an Upsample node that has zero inputs, causing an unrecoverable denial of service. This issue is fixed in version 1.22.0.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","score":5.5},"cwes":["CWE-476"],"references":["https://github.com/onnx/onnx/commit/cd310408165ad47c3cd7eb2b86cb5b80aa2e4fdf","https://github.com/onnx/onnx/pull/7813","https://github.com/onnx/onnx/releases/tag/v1.22.0","https://github.com/onnx/onnx/security/advisories/GHSA-hwpq-hmq9-wj77","https://github.com/onnx/onnx/security/advisories/GHSA-hwpq-hmq9-wj77"],"products":["linuxfoundation:onnx"],"source":"nvd","synced_at":"2026-10-19T22:42:16.820116992+00:00"},"epss":{"cve":"CVE-2026-44512","score":0.00193,"percentile":0.08963,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-hwpq-hmq9-wj77","url":"https://osv.dev/vulnerability/GHSA-hwpq-hmq9-wj77","summary":"ONNX has Null Pointer Dereference in Upsample Version Converter Adapter (Zero Inputs)","modified":"2026-09-10T03:50:12.336362449Z","packages":[{"ecosystem":"PyPI","name":"onnx","purl":"pkg:pypi/onnx","ranges":[">=1.9.0 <1.22.0"],"fixed":["1.22.0"]}]},{"id":"PYSEC-2026-2689","url":"https://osv.dev/vulnerability/PYSEC-2026-2689","summary":"ONNX has Null Pointer Dereference in Upsample Version Converter Adapter (Zero Inputs)","modified":"2026-07-13T16:32:54.590029640Z","packages":[{"ecosystem":"PyPI","name":"onnx","purl":"pkg:pypi/onnx","ranges":[">=1.9.0 <1.22.0"],"fixed":["1.22.0"]}]}],"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."]}