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    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-116366",
        "assignerOrgId": "cb7ba516-3b07-4c98-b0c2-715220f1a8f6",
        "state": "PUBLISHED",
        "assignerShortName": "ClickHouse",
        "dateReserved": "2026-10-26T07:54:23.069Z",
        "datePublished": "2026-10-30T11:00:11.115Z",
        "dateUpdated": "2026-10-30T11:00:11.115Z"
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                "orgId": "cb7ba516-3b07-4c98-b0c2-715220f1a8f6",
                "shortName": "ClickHouse",
                "dateUpdated": "2026-10-30T11:00:11.115Z"
            },
            "title": "Unauthenticated RCE vulnerability against ClickHouse Server",
            "datePublic": "2026-10-30T10:59:00.000Z",
            "problemTypes": [
                {
                    "descriptions": [
                        {
                            "lang": "en",
                            "cweId": "CWE-190",
                            "description": "CWE-190 Integer overflow or wraparound",
                            "type": "CWE"
                        }
                    ]
                }
            ],
            "impacts": [
                {
                    "capecId": "CAPEC-248",
                    "descriptions": [
                        {
                            "lang": "en",
                            "value": "CAPEC-248 Command Injection"
                        }
                    ]
                }
            ],
            "affected": [
                {
                    "vendor": "ClickHouse",
                    "product": "ClickHouse",
                    "platforms": [
                        "x86",
                        "arm"
                    ],
                    "collectionURL": "https://packages.clickhouse.com/",
                    "packageName": "ClickHouse",
                    "repo": "https://github.com/ClickHouse/clickhouse",
                    "versions": [
                        {
                            "status": "affected",
                            "version": "26.3",
                            "lessThan": "26.3.62.3-lts",
                            "versionType": "custom"
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                            "status": "affected",
                            "version": "26.8",
                            "lessThan": "26.8.36.3-lts",
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                            "status": "affected",
                            "version": "26.9",
                            "lessThan": "26.9.27.3-stable",
                            "versionType": "custom"
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                            "status": "affected",
                            "version": "26.10",
                            "lessThan": "26.10.3.7-stable",
                            "versionType": "custom"
                        }
                    ],
                    "defaultStatus": "affected"
                }
            ],
            "descriptions": [
                {
                    "lang": "en",
                    "value": "An issue has been discovered in ClickHouse Server that, under certain conditions, could allow an unauthenticated user with network access to execute arbitrary code on the ClickHouse Server.",
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                            "value": "<pre>An issue has been discovered in ClickHouse Server that, under certain conditions, could allow an unauthenticated user with network access to execute arbitrary code on the ClickHouse Server. </pre>"
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            ],
            "references": [
                {
                    "url": "https://github.com/ClickHouse/ClickHouse/blob/master/SECURITY.md"
                },
                {
                    "url": "https://clickhouse.com/docs/resources/changelogs/security-changelog"
                }
            ],
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                            "lang": "en",
                            "value": "GENERAL"
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                    "cvssV4_0": {
                        "attackVector": "NETWORK",
                        "attackComplexity": "HIGH",
                        "attackRequirements": "NONE",
                        "privilegesRequired": "NONE",
                        "userInteraction": "NONE",
                        "vulnConfidentialityImpact": "HIGH",
                        "subConfidentialityImpact": "HIGH",
                        "vulnIntegrityImpact": "HIGH",
                        "subIntegrityImpact": "HIGH",
                        "vulnAvailabilityImpact": "HIGH",
                        "subAvailabilityImpact": "HIGH",
                        "exploitMaturity": "NOT_DEFINED",
                        "Safety": "NOT_DEFINED",
                        "Automatable": "NOT_DEFINED",
                        "Recovery": "NOT_DEFINED",
                        "valueDensity": "NOT_DEFINED",
                        "vulnerabilityResponseEffort": "NOT_DEFINED",
                        "providerUrgency": "NOT_DEFINED",
                        "version": "4.0",
                        "baseSeverity": "CRITICAL",
                        "baseScore": 9.5,
                        "vectorString": "CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H"
                    }
                }
            ],
            "credits": [
                {
                    "lang": "en",
                    "value": "Elshad Toklayev",
                    "type": "reporter"
                }
            ],
            "source": {
                "discovery": "UNKNOWN"
            },
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}