CVE-2026-31239

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{"affected": [{"affectedData": [{"product": "n/a", "vendor": "n/a", "versions": [{"status": "affected", "version": "n/a"}]}], "source": "cve@mitre.org"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "The mamba language model framework thru 2.2.6 is vulnerable to insecure deserialization (CWE-502) when loading pre-trained models from HuggingFace Hub. The MambaLMHeadModel.from_pretrained() method uses torch.load() to load the pytorch_model.bin weight file without enabling the security-restrictive weights_only=True parameter. This allows the deserialization of arbitrary Python objects via the pickle module. An attacker can exploit this by publishing a malicious model repository on HuggingFace Hub. When a victim loads a model from this repository, arbitrary code is executed on the victim's system in the context of the mamba process."}, {"lang": "es", "value": "El framework del modelo de lenguaje mamba hasta la versi\u00f3n 2.2.6 es vulnerable a deserializaci\u00f3n insegura (CWE-502) al cargar modelos preentrenados desde HuggingFace Hub. El m\u00e9todo MambaLMHeadModel.from_pretrained() utiliza torch.load() para cargar el archivo de pesos pytorch_model.bin sin habilitar el par\u00e1metro restrictivo de seguridad weights_only=True. Esto permite la deserializaci\u00f3n de objetos Python arbitrarios a trav\u00e9s del m\u00f3dulo pickle. Un atacante puede explotar esto publicando un repositorio de modelos malicioso en HuggingFace Hub. Cuando una v\u00edctima carga un modelo desde este repositorio, se ejecuta c\u00f3digo arbitrario en el sistema de la v\u00edctima en el contexto del proceso mamba."}], "id": "CVE-2026-31239", "lastModified": "2026-10-19T22:10:00.130", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 9.8, "baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 5.9, "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-31239", "options": [{"exploitation": "none"}, {"automatable": "yes"}, {"technicalImpact": "total"}], "role": "CISA Coordinator", "timestamp": "2026-05-14T16:52:22.756950Z", "version": "2.0.3"}}]}, "published": "2026-05-12T18:16:52.320", "references": [{"source": "cve@mitre.org", "url": "https://github.com/state-spaces/mamba"}, {"source": "cve@mitre.org", "url": "https://www.notion.so/CVE-2026-31239-35d1e1393188810d9baedfbd8363f396"}], "sourceIdentifier": "cve@mitre.org", "vulnStatus": "Deferred", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-502"}], "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0,2.2.6]"}}], "enrichment": {"confidence": 80.0, "confidence_source": "inferred", "scores": [{"score": 80.0, "source": "inferred"}]}, "original": {"product": "n/a", "source": "cna", "vendor": "n/a"}, "product": "mamba", "vendor": "state-spaces"}], "created": "2026-05-12T18:30:22.229369+00:00", "updated": "2026-05-14T22:45:31.102094+00:00", "vendors": ["state-spaces", "state-spaces$PRODUCT$mamba"]}