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        "state": "PUBLISHED",
        "assignerShortName": "elastic",
        "dateReserved": "2026-08-10T11:17:38.892Z",
        "datePublished": "2026-09-01T19:20:17.955Z",
        "dateUpdated": "2026-09-01T19:38:50.967Z"
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                    "value": "Deserialization of Untrusted Data (CWE-502) in the Elasticsearch machine learning component can lead to remote code execution via Object Injection (CAPEC-586). A specially crafted trained model artifact could cause attacker-controlled logic to execute with a materially broader system-call surface than intended. Exploitation requires an authenticated user with sufficient privileges to create and deploy trained models.",
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                        "baseSeverity": "HIGH",
                        "attackVector": "NETWORK",
                        "attackComplexity": "LOW",
                        "privilegesRequired": "LOW",
                        "userInteraction": "NONE",
                        "scope": "UNCHANGED",
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                    "url": "https://discuss.elastic.co/t/elasticsearch-8-19-20-9-4-5-9-5-1-security-update-esa-2026-114/390087"
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            "source": {
                "discovery": "Elastic"
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            "title": "Deserialization of Untrusted Data in Elasticsearch Leading to Remote Code Execution",
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                                        "Exploitation": "none"
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