CVE-2026-76841

{"id": "CVE-2026-76841", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-76841", "role": "CISA Coordinator", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "total"}], "version": "2.0.3", "timestamp": "2026-08-26T15:56:50.906437Z"}}], "cvssMetricV31": [{"type": "Secondary", "source": "disclosure@vulncheck.com", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 8.8, "attackVector": "NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "HIGH"}, "impactScore": 5.9, "exploitabilityScore": 2.8}], "cvssMetricV40": [{"type": "Secondary", "source": "disclosure@vulncheck.com", "cvssData": {"Safety": "NOT_DEFINED", "version": "4.0", "Recovery": "NOT_DEFINED", "baseScore": 8.7, "Automatable": "NOT_DEFINED", "attackVector": "NETWORK", "baseSeverity": "HIGH", "valueDensity": "NOT_DEFINED", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X", "exploitMaturity": "NOT_DEFINED", "providerUrgency": "NOT_DEFINED", "userInteraction": "NONE", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "LOW", "subIntegrityImpact": "NONE", "vulnIntegrityImpact": "HIGH", "integrityRequirement": "NOT_DEFINED", "modifiedAttackVector": "NOT_DEFINED", "subAvailabilityImpact": "NONE", "vulnAvailabilityImpact": "HIGH", "availabilityRequirement": "NOT_DEFINED", "modifiedUserInteraction": "NOT_DEFINED", "modifiedAttackComplexity": "NOT_DEFINED", "subConfidentialityImpact": "NONE", "vulnConfidentialityImpact": "HIGH", "confidentialityRequirement": "NOT_DEFINED", "modifiedAttackRequirements": "NOT_DEFINED", "modifiedPrivilegesRequired": "NOT_DEFINED", "modifiedSubIntegrityImpact": "NOT_DEFINED", "modifiedVulnIntegrityImpact": "NOT_DEFINED", "vulnerabilityResponseEffort": "NOT_DEFINED", "modifiedSubAvailabilityImpact": "NOT_DEFINED", "modifiedVulnAvailabilityImpact": "NOT_DEFINED", "modifiedSubConfidentialityImpact": "NOT_DEFINED", "modifiedVulnConfidentialityImpact": "NOT_DEFINED"}}]}, "affected": [{"source": "disclosure@vulncheck.com", "affectedData": [{"vendor": "xorbitsai", "product": "inference", "versions": [{"status": "affected", "version": "0", "lessThan": "2.12.0", "versionType": "semver"}], "packageURL": "pkg:pypi/xinference", "packageName": "xinference", "collectionURL": "https://pypi.org/project/xinference/", "defaultStatus": "unaffected"}]}], "published": "2026-08-24T14:17:01.760", "references": [{"url": "https://github.com/xorbitsai/inference", "source": "disclosure@vulncheck.com"}, {"url": "https://github.com/xorbitsai/inference/blob/v2.11.0/xinference/model/rerank/core.py", "source": "disclosure@vulncheck.com"}, {"url": "https://github.com/xorbitsai/inference/issues/5023", "source": "disclosure@vulncheck.com"}, {"url": "https://github.com/xorbitsai/inference/pull/5027", "source": "disclosure@vulncheck.com"}, {"url": "https://www.vulncheck.com/advisories/xinference-through-remote-code-execution-via-hardcoded-trust-remote-code-in-model-loaders", "source": "disclosure@vulncheck.com"}], "vulnStatus": "Deferred", "weaknesses": [{"type": "Secondary", "source": "disclosure@vulncheck.com", "description": [{"lang": "en", "value": "CWE-94"}]}], "descriptions": [{"lang": "en", "value": "Xinference loads models with Hugging Face remote code execution unconditionally enabled, and before version 2.12.0 exposes no setting to disable it. Six loader call sites pass trust_remote_code=True as a literal or as an unconditional default: RerankModel._get_tokenizer in xinference/model/rerank/core.py, SentenceTransformerRerankModel.load in xinference/model/rerank/sentence_transformers/core.py, SentenceTransformerEmbeddingModel.load in xinference/model/embedding/sentence_transformers/core.py, FlagEmbeddingModel.load in xinference/model/embedding/flag/core.py, and two sites in xinference/model/llm/transformers/core.py where PytorchModel._sanitize_model_config and PytorchModel._get_components default the value to True. Because a caller with model launch access can register a model whose type is unknown and supply an arbitrary model path, the server reaches _auto_detect_type and then AutoTokenizer.from_pretrained, which imports and executes Python declared by the model directory's own tokenizer_config.json auto_map, running attacker-supplied code with the privileges of the worker process. Version 2.12.0 gates every site behind allow_trust_remote_code and the XINFERENCE_TRUST_REMOTE_CODE setting, permitting remote code only for bundled built-in models."}, {"lang": "es", "value": "Xinference carga modelos con la ejecuci\u00f3n remota de c\u00f3digo de Hugging Face habilitada incondicionalmente, y antes de la versi\u00f3n 2.12.0 no expone ninguna configuraci\u00f3n para deshabilitarla. Seis sitios de llamada del cargador pasan trust_remote_code=True como un literal o como un valor predeterminado incondicional: RerankModel._get_tokenizer en xinference/model/rerank/core.py, SentenceTransformerRerankModel.load en xinference/model/rerank/sentence_transformers/core.py, SentenceTransformerEmbeddingModel.load en xinference/model/embedding/sentence_transformers/core.py, FlagEmbeddingModel.load en xinference/model/embedding/flag/core.py, y dos sitios en xinference/model/llm/transformers/core.py donde PytorchModel._sanitize_model_config y PytorchModel._get_components establecen el valor predeterminado en True. Debido a que un llamador con acceso al lanzamiento de modelos puede registrar un modelo cuyo tipo es desconocido y proporcionar una ruta de modelo arbitraria, el servidor alcanza _auto_detect_type y luego AutoTokenizer.from_pretrained, que importa y ejecuta Python declarado por el auto_map de tokenizer_config.json del propio directorio del modelo, ejecutando c\u00f3digo suministrado por el atacante con los privilegios del proceso de trabajo. La versi\u00f3n 2.12.0 protege cada sitio detr\u00e1s de allow_trust_remote_code y la configuraci\u00f3n XINFERENCE_TRUST_REMOTE_CODE, permitiendo c\u00f3digo remoto solo para modelos integrados empaquetados."}], "lastModified": "2026-10-12T15:10:00.207", "sourceIdentifier": "disclosure@vulncheck.com"}