CVE-2026-115922

{"id": "CVE-2026-115922", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-115922", "role": "CISA Coordinator", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "version": "2.0.3", "timestamp": "2026-10-30T17:40:12.778537Z"}}], "cvssMetricV31": [{"type": "Secondary", "source": "security-advisories@github.com", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 6.2, "attackVector": "LOCAL", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "NONE"}, "impactScore": 3.6, "exploitabilityScore": 2.5}]}, "affected": [{"source": "security-advisories@github.com", "affectedData": [{"vendor": "onnx", "product": "onnx", "versions": [{"status": "affected", "version": "< 1.22.0"}]}]}], "published": "2026-10-26T18:17:40.163", "references": [{"url": "https://github.com/onnx/onnx/commit/05c1bc3bceceb8d3cf11e9e7fc7f19f971c44988", "source": "security-advisories@github.com"}, {"url": "https://github.com/onnx/onnx/commit/8de2cf6aa47928e6515ac6d9e1a8b4758886a7df", "source": "security-advisories@github.com"}, {"url": "https://github.com/onnx/onnx/commit/dce5876d6cc6cc30157af7d26a752ef44976da8e", "source": "security-advisories@github.com"}, {"url": "https://github.com/onnx/onnx/pull/8033", "source": "security-advisories@github.com"}, {"url": "https://github.com/onnx/onnx/pull/8038", "source": "security-advisories@github.com"}, {"url": "https://github.com/onnx/onnx/pull/8066", "source": "security-advisories@github.com"}, {"url": "https://github.com/onnx/onnx/releases/tag/v1.22.0", "source": "security-advisories@github.com"}, {"url": "https://github.com/onnx/onnx/security/advisories/GHSA-q69g-f4f5-v8m7", "source": "security-advisories@github.com"}], "vulnStatus": "Awaiting Analysis", "weaknesses": [{"type": "Secondary", "source": "security-advisories@github.com", "description": [{"lang": "en", "value": "CWE-789"}]}], "descriptions": [{"lang": "en", "value": "Open Neural Network Exchange (ONNX) is an open standard for machine learning interoperability. Prior to 1.22.0, _unpack_2bit() and _unpack_4bit() resize unpacked arrays according to attacker-controlled TensorProto.dims without verifying that raw_data or int32_data encodes the declared number of elements. Materializing an untrusted UINT2, INT2, UINT4, INT4, or FLOAT4E2M1 tensor through onnx.numpy_helper.to_array() or onnx.reference.ReferenceEvaluator can therefore expand a small packed payload into a disproportionately large allocation and exhaust memory. This issue is fixed in version 1.22.0."}], "lastModified": "2026-10-30T18:17:23.540", "sourceIdentifier": "security-advisories@github.com"}