{"id":"CVE-2026-115920","state":"PUBLISHED","title":"ONNX: Out-of-bounds read in ConvTranspose shape inference via undersized weight rank","description":"Open Neural Network Exchange (ONNX) is an open standard for machine learning interoperability. From 1.2.1 until 1.22.0, ConvTranspose shape inference processes a weight tensor with fewer than three dimensions without a kernel_shape attribute by deriving an empty effective_kernel_shape and indexing it for the input's spatial dimensions. The flaw affects convTransposeShapeInference_opset11() and the current inference path, and an untrusted model that can pass onnx.checker.check_model() can crash onnx.shape_inference.infer_shapes(), causing denial of service without demonstrated confidentiality or integrity impact. This issue is fixed in version 1.22.0.","publishedAt":"2026-10-26T17:26:40.506Z","updatedAt":"2026-10-26T19:48:35.202Z","severity":{"score":6.2,"label":"Medium","version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","source":"GitHub_M"},"assigner":"GitHub_M","products":["onnx onnx"],"affected":[{"vendor":"onnx","product":"onnx","versions":[{"version":">= 1.2.1, < 1.22.0","status":"affected"}]}],"references":["https://github.com/onnx/onnx/security/advisories/GHSA-6pwm-x34p-fvj2","https://github.com/onnx/onnx/pull/7997","https://github.com/onnx/onnx/commit/2ec288908952eea9dcf48d4b197915e1f72c6abf","https://github.com/onnx/onnx/releases/tag/v1.22.0"],"weaknesses":["CWE-125"],"ingestedAt":"2026-10-29T20:10:43.281Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/115xxx/CVE-2026-115920.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-115920","state":"PUBLISHED","datePublished":"2026-10-26T17:26:40.506Z","dateUpdated":"2026-10-26T19:48:35.202Z","assignerShortName":"GitHub_M","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateReserved":"2026-10-23T20:21:45.107Z"},"containers":{"cna":{"title":"ONNX: Out-of-bounds read in ConvTranspose shape inference via undersized weight rank","descriptions":[{"lang":"en","value":"Open Neural Network Exchange (ONNX) is an open standard for machine learning interoperability. From 1.2.1 until 1.22.0, ConvTranspose shape inference processes a weight tensor with fewer than three dimensions without a kernel_shape attribute by deriving an empty effective_kernel_shape and indexing it for the input's spatial dimensions. The flaw affects convTransposeShapeInference_opset11() and the current inference path, and an untrusted model that can pass onnx.checker.check_model() can crash onnx.shape_inference.infer_shapes(), causing denial of service without demonstrated confidentiality or integrity impact. This issue is fixed in version 1.22.0."}],"affected":[{"vendor":"onnx","product":"onnx","versions":[{"version":">= 1.2.1, < 1.22.0","status":"affected"}]}],"references":[{"url":"https://github.com/onnx/onnx/security/advisories/GHSA-6pwm-x34p-fvj2","name":"https://github.com/onnx/onnx/security/advisories/GHSA-6pwm-x34p-fvj2","tags":["x_refsource_CONFIRM"]},{"url":"https://github.com/onnx/onnx/pull/7997","name":"https://github.com/onnx/onnx/pull/7997","tags":["x_refsource_MISC"]},{"url":"https://github.com/onnx/onnx/commit/2ec288908952eea9dcf48d4b197915e1f72c6abf","name":"https://github.com/onnx/onnx/commit/2ec288908952eea9dcf48d4b197915e1f72c6abf","tags":["x_refsource_MISC"]},{"url":"https://github.com/onnx/onnx/releases/tag/v1.22.0","name":"https://github.com/onnx/onnx/releases/tag/v1.22.0","tags":["x_refsource_MISC"]}],"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"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-125","lang":"en","description":"CWE-125: Out-of-bounds Read","type":"CWE"}]}],"providerMetadata":{"shortName":"GitHub_M","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateUpdated":"2026-10-26T17:26:40.506Z"},"source":{"advisory":"GHSA-6pwm-x34p-fvj2","discovery":"UNKNOWN"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"id":"CVE-2026-115920","role":"CISA Coordinator","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"version":"2.0.3","timestamp":"2026-10-26T19:30:01.679717Z"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-10-26T19:48:35.202Z"}}]}}}