{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-115921","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","state":"PUBLISHED","assignerShortName":"GitHub_M","dateReserved":"2026-10-23T20:21:45.107Z","datePublished":"2026-10-26T17:28:41.420Z","dateUpdated":"2026-10-26T17:28:41.420Z"},"containers":{"cna":{"title":"ONNX: Null Pointer Dereference in ScanInferenceFunction Due to Missing Required Attribute","problemTypes":[{"descriptions":[{"cweId":"CWE-195","lang":"en","description":"CWE-195: Signed to Unsigned Conversion Error","type":"CWE"}]},{"descriptions":[{"cweId":"CWE-476","lang":"en","description":"CWE-476: NULL Pointer Dereference","type":"CWE"}]}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"LOCAL","availabilityImpact":"HIGH","baseScore":6.2,"baseSeverity":"MEDIUM","confidentialityImpact":"NONE","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","version":"3.1"}}],"references":[{"name":"https://github.com/onnx/onnx/security/advisories/GHSA-m4pr-6v3c-6fgr","tags":["x_refsource_CONFIRM"],"url":"https://github.com/onnx/onnx/security/advisories/GHSA-m4pr-6v3c-6fgr"},{"name":"https://github.com/onnx/onnx/pull/7916","tags":["x_refsource_MISC"],"url":"https://github.com/onnx/onnx/pull/7916"},{"name":"https://github.com/onnx/onnx/commit/dd6bc92ea39fd2274fd671f0734b0b8b558356f5","tags":["x_refsource_MISC"],"url":"https://github.com/onnx/onnx/commit/dd6bc92ea39fd2274fd671f0734b0b8b558356f5"},{"name":"https://github.com/onnx/onnx/releases/tag/v1.22.0","tags":["x_refsource_MISC"],"url":"https://github.com/onnx/onnx/releases/tag/v1.22.0"}],"affected":[{"vendor":"onnx","product":"onnx","versions":[{"version":">= 1.4.0, < 1.22.0","status":"affected"}]}],"providerMetadata":{"orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","shortName":"GitHub_M","dateUpdated":"2026-10-26T17:28:41.420Z"},"descriptions":[{"lang":"en","value":"Open Neural Network Exchange (ONNX) is an open standard for machine learning interoperability. From 1.4.0 until 1.22.0, ScanInferenceFunction, ScanInferenceFunction_opset8, and ScanInferenceFunction_opset9 do not safely validate the required num_scan_inputs attribute. A missing attribute is dereferenced as a null pointer, while a negative value is converted to size_t and can reach an exceptional oversized allocation path. An untrusted model can therefore terminate or disrupt shape inference, including a negative-value model that can pass onnx.checker.check_model(). This issue is fixed in version 1.22.0."}],"source":{"advisory":"GHSA-m4pr-6v3c-6fgr","discovery":"UNKNOWN"}}}}