{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-78581",
        "assignerOrgId": "271b6943-45a9-4f3a-ab4e-976f3fa05b5a",
        "state": "PUBLISHED",
        "assignerShortName": "elastic",
        "dateReserved": "2026-08-24T21:13:45.971Z",
        "datePublished": "2026-08-25T13:08:11.520Z",
        "dateUpdated": "2026-08-25T13:08:11.520Z"
    },
    "containers": {
        "cna": {
            "affected": [
                {
                    "defaultStatus": "unaffected",
                    "product": "Kibana",
                    "vendor": "Elastic",
                    "versions": [
                        {
                            "lessThanOrEqual": "8.16.2",
                            "status": "affected",
                            "version": "8.0.0",
                            "versionType": "semver"
                        }
                    ]
                }
            ],
            "descriptions": [
                {
                    "lang": "en",
                    "supportingMedia": [
                        {
                            "base64": false,
                            "type": "text/html",
                            "value": "<p>Authorization Bypass Through User-Controlled Key (CWE-639) in Kibana can lead to unauthorized data modification via Accessing Functionality Not Properly Constrained by ACLs (CAPEC-1). Under certain conditions, an authenticated user could reference another user's AI Assistant conversation identifier to access or modify a conversation they do not own. Successful exploitation requires knowledge of a hard-to-guess identifier.</p>"
                        }
                    ],
                    "value": "Authorization Bypass Through User-Controlled Key (CWE-639) in Kibana can lead to unauthorized data modification via Accessing Functionality Not Properly Constrained by ACLs (CAPEC-1). Under certain conditions, an authenticated user could reference another user's AI Assistant conversation identifier to access or modify a conversation they do not own. Successful exploitation requires knowledge of a hard-to-guess identifier."
                }
            ],
            "impacts": [
                {
                    "capecId": "CAPEC-1",
                    "descriptions": [
                        {
                            "lang": "en",
                            "value": "CAPEC-1 Accessing Functionality Not Properly Constrained by ACLs"
                        }
                    ]
                }
            ],
            "metrics": [
                {
                    "cvssV3_1": {
                        "attackComplexity": "HIGH",
                        "attackVector": "NETWORK",
                        "availabilityImpact": "NONE",
                        "baseSeverity": "MEDIUM",
                        "baseScore": 4.2,
                        "confidentialityImpact": "LOW",
                        "integrityImpact": "LOW",
                        "scope": "UNCHANGED",
                        "userInteraction": "NONE",
                        "privilegesRequired": "LOW",
                        "vectorString": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N",
                        "version": "3.1"
                    },
                    "format": "CVSS",
                    "scenarios": [
                        {
                            "lang": "en",
                            "value": "GENERAL"
                        }
                    ]
                }
            ],
            "problemTypes": [
                {
                    "descriptions": [
                        {
                            "cweId": "CWE-639",
                            "description": "CWE-639 Authorization Bypass Through User-Controlled Key",
                            "lang": "en",
                            "type": "CWE"
                        }
                    ]
                }
            ],
            "providerMetadata": {
                "orgId": "271b6943-45a9-4f3a-ab4e-976f3fa05b5a",
                "shortName": "elastic",
                "dateUpdated": "2026-08-25T13:08:11.520Z"
            },
            "references": [
                {
                    "url": "https://discuss.elastic.co/t/kibana-8-16-3-8-17-2-security-update-esa-2026-51/387446"
                }
            ],
            "source": {
                "discovery": "Elastic"
            },
            "title": "Authorization Bypass Through User-Controlled Key in Kibana Leading to Unauthorized Data Modification in Kibana",
            "x_generator": {
                "engine": "Elastic CVE Publisher 0.0.1"
            }
        }
    }
}