{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-42400", "assignerOrgId": "271b6943-45a9-4f3a-ab4e-976f3fa05b5a", "state": "PUBLISHED", "assignerShortName": "elastic", "dateReserved": "2026-04-27T10:14:34.318Z", "datePublished": "2026-05-28T19:42:11.414Z", "dateUpdated": "2026-05-28T19:42:11.414Z"}, "containers": {"cna": {"affected": [{"defaultStatus": "unaffected", "product": "Kibana", "vendor": "Elastic", "versions": [{"lessThanOrEqual": "9.4.1", "status": "affected", "version": "9.4.0", "versionType": "semver"}, {"lessThanOrEqual": "9.3.4", "status": "affected", "version": "9.0.0", "versionType": "semver"}, {"lessThanOrEqual": "8.19.15", "status": "affected", "version": "8.0.0", "versionType": "semver"}]}], "descriptions": [{"lang": "en", "supportingMedia": [{"base64": false, "type": "text/html", "value": "<p>Uncontrolled Resource Consumption (CWE-400) in Kibana can lead to denial of service via Excessive Allocation (CAPEC-130). An authenticated user can send a specially crafted compressed request payload that is processed prior to authorization checks, causing excessive memory and CPU resource consumption that can result in a Kibana instance becoming unresponsive or crashing.</p>"}], "value": "Uncontrolled Resource Consumption (CWE-400) in Kibana can lead to denial of service via Excessive Allocation (CAPEC-130). An authenticated user can send a specially crafted compressed request payload that is processed prior to authorization checks, causing excessive memory and CPU resource consumption that can result in a Kibana instance becoming unresponsive or crashing."}], "impacts": [{"capecId": "CAPEC-130", "descriptions": [{"lang": "en", "value": "CAPEC-130 Excessive Allocation"}]}], "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-400", "description": "CWE-400 Uncontrolled Resource Consumption", "lang": "en", "type": "CWE"}]}], "providerMetadata": {"orgId": "271b6943-45a9-4f3a-ab4e-976f3fa05b5a", "shortName": "elastic", "dateUpdated": "2026-05-28T19:42:11.414Z"}, "references": [{"url": "https://discuss.elastic.co/t/kibana-8-19-16-9-3-5-9-4-2-security-update-esa-2026-35/386554"}], "source": {"discovery": "Elastic"}, "title": "Uncontrolled Resource Consumption in Kibana Leading to Denial of Service", "x_generator": {"engine": "Elastic CVE Publisher 0.0.1"}}}}

{}

{"cveTags": [], "descriptions": [{"lang": "en", "value": "Uncontrolled Resource Consumption (CWE-400) in Kibana can lead to denial of service via Excessive Allocation (CAPEC-130). An authenticated user can send a specially crafted compressed request payload that is processed prior to authorization checks, causing excessive memory and CPU resource consumption that can result in a Kibana instance becoming unresponsive or crashing."}], "id": "CVE-2026-42400", "lastModified": "2026-05-28T21:16:30.497", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 6.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 3.6, "source": "security@elastic.co", "type": "Secondary"}]}, "published": "2026-05-28T21:16:30.497", "references": [{"source": "security@elastic.co", "url": "https://discuss.elastic.co/t/kibana-8-19-16-9-3-5-9-4-2-security-update-esa-2026-35/386554"}], "sourceIdentifier": "security@elastic.co", "vulnStatus": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-400"}], "source": "security@elastic.co", "type": "Secondary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[9.4.0,9.4.1]"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[9.0.0,9.3.4]"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[8.0.0,8.19.15]"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "Kibana", "source": "cna", "vendor": "Elastic"}, "product": "kibana", "vendor": "elastic"}], "created": "2026-05-28T21:30:26.168173+00:00", "updated": "2026-05-28T21:30:26.168213+00:00", "vendors": ["elastic", "elastic$PRODUCT$kibana"]}