CVE-2026-68770

{"id": "CVE-2026-68770", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-68770", "role": "CISA Coordinator", "options": [{"exploitation": "poc"}, {"automatable": "yes"}, {"technicalImpact": "total"}], "version": "2.0.3", "timestamp": "2026-08-03T18:15:42.984440Z"}}], "cvssMetricV31": [{"type": "Secondary", "source": "disclosure@vulncheck.com", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 9.8, "attackVector": "NETWORK", "baseSeverity": "CRITICAL", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "HIGH"}, "impactScore": 5.9, "exploitabilityScore": 3.9}], "cvssMetricV40": [{"type": "Secondary", "source": "disclosure@vulncheck.com", "cvssData": {"Safety": "NOT_DEFINED", "version": "4.0", "Recovery": "NOT_DEFINED", "baseScore": 9.3, "Automatable": "NOT_DEFINED", "attackVector": "NETWORK", "baseSeverity": "CRITICAL", "valueDensity": "NOT_DEFINED", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/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": "NONE", "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": "Hugging Face", "product": "sentence-transformers", "versions": [{"status": "affected", "version": "0", "versionType": "semver", "lessThanOrEqual": "5.5.1"}], "packageURL": "pkg:pypi/sentence-transformers", "defaultStatus": "affected"}]}], "published": "2026-07-31T21:17:32.440", "references": [{"url": "https://github.com/huggingface/sentence-transformers", "source": "disclosure@vulncheck.com"}, {"url": "https://github.com/huggingface/sentence-transformers/commit/ae1acc3fb2aa2004577b297eb4a915ce7a03316a", "source": "disclosure@vulncheck.com"}, {"url": "https://github.com/huggingface/sentence-transformers/issues/3801", "source": "disclosure@vulncheck.com"}, {"url": "https://github.com/huggingface/sentence-transformers/pull/3807", "source": "disclosure@vulncheck.com"}, {"url": "https://www.vulncheck.com/advisories/sentence-transformers-arbitrary-code-execution-on-local-model-load-despite-trust-remote-code-false", "source": "disclosure@vulncheck.com"}, {"url": "https://github.com/huggingface/sentence-transformers/issues/3801", "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0"}], "vulnStatus": "Deferred", "weaknesses": [{"type": "Secondary", "source": "disclosure@vulncheck.com", "description": [{"lang": "en", "value": "CWE-94"}]}], "descriptions": [{"lang": "en", "value": "sentence-transformers contains a security control bypass vulnerability that allows attackers to achieve arbitrary code execution by exploiting a logic flaw in the import_module_class helper within sentence_transformers/util/misc.py, where the guard condition includes an 'or os.path.exists(model_name_or_path)' clause that satisfies the trust gate whenever the supplied path exists on the local filesystem, regardless of the trust_remote_code=False argument. Attackers who can control or influence the contents of a model directory on disk can place malicious Python files such as modeling_*.py referenced via modules.json, causing the code to execute at import time when an application loads the model with SentenceTransformer(path, trust_remote_code=False), bypassing the documented security contract and achieving code execution within the loading process."}, {"lang": "es", "value": "sentence-transformers contiene una vulnerabilidad de omisi\u00f3n de control de seguridad que permite a los atacantes lograr ejecuci\u00f3n de c\u00f3digo arbitrario al explotar un fallo l\u00f3gico en la funci\u00f3n auxiliar import_module_class dentro de sentence_transformers/util/misc.py, donde la condici\u00f3n de guardia incluye una cl\u00e1usula \u2019or os.path.exists(model_name_or_path)\u2019 que satisface la puerta de confianza siempre que la ruta proporcionada existe en el sistema de archivos local, independientemente del argumento trust_remote_code=False. Los atacantes que pueden controlar o influir en el contenido de un directorio de modelo en disco pueden colocar archivos Python maliciosos como modeling_*.py referenciados a trav\u00e9s de modules.json, haciendo que el c\u00f3digo se ejecute en el momento de la importaci\u00f3n cuando una aplicaci\u00f3n carga el modelo con SentenceTransformer(path, trust_remote_code=False), omitiendo el contrato de seguridad documentado y logrando la ejecuci\u00f3n de c\u00f3digo dentro del proceso de carga."}], "lastModified": "2026-10-23T23:10:00.157", "sourceIdentifier": "disclosure@vulncheck.com"}