{"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"}}}}

{}

{"affected": [{"affectedData": [{"product": "onnx", "vendor": "onnx", "versions": [{"status": "affected", "version": ">= 1.4.0, < 1.22.0"}]}], "source": "[email protected]"}], "cveTags": [], "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."}], "id": "CVE-2026-115921", "lastModified": "2026-10-26T18:34:17.050", "metrics": {"cvssMetricV31": [{"cvssData": {"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"}, "exploitabilityScore": 2.5, "impactScore": 3.6, "source": "[email protected]", "type": "Secondary"}]}, "published": "2026-10-26T18:17:39.990", "references": [{"source": "[email protected]", "url": "https://github.com/onnx/onnx/commit/dd6bc92ea39fd2274fd671f0734b0b8b558356f5"}, {"source": "[email protected]", "url": "https://github.com/onnx/onnx/pull/7916"}, {"source": "[email protected]", "url": "https://github.com/onnx/onnx/releases/tag/v1.22.0"}, {"source": "[email protected]", "url": "https://github.com/onnx/onnx/security/advisories/GHSA-m4pr-6v3c-6fgr"}], "sourceIdentifier": "[email protected]", "vulnStatus": "Awaiting Analysis", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-195"}, {"lang": "en", "value": "CWE-476"}], "source": "[email protected]", "type": "Primary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[1.4.0,1.22.0)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "onnx", "source": "cna", "vendor": "onnx"}, "product": "onnx", "vendor": "onnx"}], "created": "2026-10-26T18:30:14.672449+00:00", "updated": "2026-10-26T19:00:08.306943+00:00", "vendors": ["onnx", "onnx$PRODUCT$onnx"]}