{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-0543",
        "assignerOrgId": "271b6943-45a9-4f3a-ab4e-976f3fa05b5a",
        "state": "PUBLISHED",
        "assignerShortName": "elastic",
        "dateReserved": "2025-12-31T12:02:48.756Z",
        "datePublished": "2026-01-13T21:10:38.663Z",
        "dateUpdated": "2026-01-13T21:25:59.853Z"
    },
    "containers": {
        "cna": {
            "affected": [
                {
                    "defaultStatus": "unaffected",
                    "product": "Kibana",
                    "vendor": "Elastic",
                    "versions": [
                        {
                            "lessThanOrEqual": "8.19.9",
                            "status": "affected",
                            "version": "8.0.0",
                            "versionType": "semver"
                        },
                        {
                            "lessThanOrEqual": "7.17.29",
                            "status": "affected",
                            "version": "7.0.0",
                            "versionType": "semver"
                        },
                        {
                            "lessThanOrEqual": "9.1.9",
                            "status": "affected",
                            "version": "9.0.0",
                            "versionType": "semver"
                        },
                        {
                            "lessThanOrEqual": "9.2.3",
                            "status": "affected",
                            "version": "9.2.0",
                            "versionType": "semver"
                        }
                    ]
                }
            ],
            "descriptions": [
                {
                    "lang": "en",
                    "supportingMedia": [
                        {
                            "base64": false,
                            "type": "text/html",
                            "value": "<p>Improper Input Validation (CWE-20) in Kibana's Email Connector can allow an attacker to cause an Excessive Allocation (CAPEC-130) through a specially crafted email address parameter. This requires an attacker to have authenticated access with view-level privileges sufficient to execute connector actions. The application attempts to process specially crafted email format, resulting in complete service unavailability for all users until manual restart is performed.</p>"
                        }
                    ],
                    "value": "Improper Input Validation (CWE-20) in Kibana's Email Connector can allow an attacker to cause an Excessive Allocation (CAPEC-130) through a specially crafted email address parameter. This requires an attacker to have authenticated access with view-level privileges sufficient to execute connector actions. The application attempts to process specially crafted email format, resulting in complete service unavailability for all users until manual restart is performed."
                }
            ],
            "impacts": [
                {
                    "capecId": "CAPEC-664",
                    "descriptions": [
                        {
                            "lang": "en",
                            "value": "CAPEC-664 Server Side Request Forgery"
                        }
                    ]
                }
            ],
            "metrics": [
                {
                    "cvssV3_1": {
                        "attackComplexity": "LOW",
                        "attackVector": "NETWORK",
                        "availabilityImpact": "HIGH",
                        "baseSeverity": "MEDIUM",
                        "baseScore": 6.5,
                        "confidentialityImpact": "NONE",
                        "integrityImpact": "NONE",
                        "scope": "UNCHANGED",
                        "userInteraction": "NONE",
                        "privilegesRequired": "LOW",
                        "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
                        "version": "3.1"
                    },
                    "format": "CVSS",
                    "scenarios": [
                        {
                            "lang": "en",
                            "value": "GENERAL"
                        }
                    ]
                }
            ],
            "problemTypes": [
                {
                    "descriptions": [
                        {
                            "cweId": "CWE-20",
                            "description": "CWE-20 Improper Input Validation",
                            "lang": "en",
                            "type": "CWE"
                        }
                    ]
                }
            ],
            "providerMetadata": {
                "orgId": "271b6943-45a9-4f3a-ab4e-976f3fa05b5a",
                "shortName": "elastic",
                "dateUpdated": "2026-01-13T21:10:38.663Z"
            },
            "references": [
                {
                    "url": "https://discuss.elastic.co/t/kibana-8-19-10-9-1-10-9-2-4-security-update-esa-2026-08/384523"
                }
            ],
            "source": {
                "discovery": "Elastic"
            },
            "title": "Improper Input Validation in Kibana Email Connector Leading to Excessive Allocation",
            "x_generator": {
                "engine": "Elastic CVE Publisher 0.0.1"
            }
        },
        "adp": [
            {
                "metrics": [
                    {
                        "other": {
                            "type": "ssvc",
                            "content": {
                                "timestamp": "2026-01-13T21:22:53.219447Z",
                                "id": "CVE-2026-0543",
                                "options": [
                                    {
                                        "Exploitation": "none"
                                    },
                                    {
                                        "Automatable": "no"
                                    },
                                    {
                                        "Technical Impact": "partial"
                                    }
                                ],
                                "role": "CISA Coordinator",
                                "version": "2.0.3"
                            }
                        }
                    }
                ],
                "title": "CISA ADP Vulnrichment",
                "providerMetadata": {
                    "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
                    "shortName": "CISA-ADP",
                    "dateUpdated": "2026-01-13T21:25:59.853Z"
                }
            }
        ]
    }
}