{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-63263", "assignerOrgId": "271b6943-45a9-4f3a-ab4e-976f3fa05b5a", "state": "PUBLISHED", "assignerShortName": "elastic", "dateReserved": "2026-07-16T03:26:51.579Z", "datePublished": "2026-07-21T23:10:49.155Z", "dateUpdated": "2026-07-22T13:07:01.561Z"}, "containers": {"cna": {"affected": [{"defaultStatus": "unaffected", "product": "Elasticsearch", "vendor": "Elastic", "versions": [{"lessThanOrEqual": "9.4.3", "status": "affected", "version": "9.4.0", "versionType": "semver"}, {"lessThanOrEqual": "9.3.7", "status": "affected", "version": "9.0.0", "versionType": "semver"}, {"lessThanOrEqual": "8.19.18", "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 Elasticsearch can lead to denial of service via Exponential Data Expansion (CAPEC-197). An authenticated user may submit a specially crafted query to the ES|QL engine that causes exponential CPU consumption during query evaluation. Because the resource exhaustion persists beyond query completion, repeated requests can fully exhaust the available query worker resources, rendering ES|QL queries unavailable until the node is restarted.</p>"}], "value": "Uncontrolled Resource Consumption (CWE-400) in Elasticsearch can lead to denial of service via Exponential Data Expansion (CAPEC-197). An authenticated user may submit a specially crafted query to the ES|QL engine that causes exponential CPU consumption during query evaluation. Because the resource exhaustion persists beyond query completion, repeated requests can fully exhaust the available query worker resources, rendering ES|QL queries unavailable until the node is restarted."}], "impacts": [{"capecId": "CAPEC-197", "descriptions": [{"lang": "en", "value": "CAPEC-197 Exponential Data Expansion"}]}], "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": "2026-07-21T23:10:49.155Z"}, "references": [{"url": "https://discuss.elastic.co/t/elasticsearch-8-19-19-9-3-8-9-4-4-security-update-esa-2026-74/388577"}], "source": {"discovery": "Elastic"}, "title": "Uncontrolled Resource Consumption in Elasticsearch Leading to Denial of Service", "x_generator": {"engine": "Elastic CVE Publisher 0.0.1"}}, "adp": [{"metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2026-07-22T13:04:18.223493Z", "id": "CVE-2026-63263", "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": "2026-07-22T13:07:01.561Z"}}]}}

{"dataType": "CVE_RECORD", "containers": {"cna": {"title": "Uncontrolled Resource Consumption in Elasticsearch Leading to Denial of Service", "source": {"discovery": "Elastic"}, "impacts": [{"capecId": "CAPEC-197", "descriptions": [{"lang": "en", "value": "CAPEC-197 Exponential Data Expansion"}]}], "metrics": [{"format": "CVSS", "cvssV3_1": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 6.5, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "NONE"}, "scenarios": [{"lang": "en", "value": "GENERAL"}]}], "affected": [{"vendor": "Elastic", "product": "Elasticsearch", "versions": [{"status": "affected", "version": "9.4.0", "versionType": "semver", "lessThanOrEqual": "9.4.3"}, {"status": "affected", "version": "9.0.0", "versionType": "semver", "lessThanOrEqual": "9.3.7"}, {"status": "affected", "version": "8.0.0", "versionType": "semver", "lessThanOrEqual": "8.19.18"}], "defaultStatus": "unaffected"}], "references": [{"url": "https://discuss.elastic.co/t/elasticsearch-8-19-19-9-3-8-9-4-4-security-update-esa-2026-74/388577"}], "x_generator": {"engine": "Elastic CVE Publisher 0.0.1"}, "descriptions": [{"lang": "en", "value": "Uncontrolled Resource Consumption (CWE-400) in Elasticsearch can lead to denial of service via Exponential Data Expansion (CAPEC-197). An authenticated user may submit a specially crafted query to the ES|QL engine that causes exponential CPU consumption during query evaluation. Because the resource exhaustion persists beyond query completion, repeated requests can fully exhaust the available query worker resources, rendering ES|QL queries unavailable until the node is restarted.", "supportingMedia": [{"type": "text/html", "value": "<p>Uncontrolled Resource Consumption (CWE-400) in Elasticsearch can lead to denial of service via Exponential Data Expansion (CAPEC-197). An authenticated user may submit a specially crafted query to the ES|QL engine that causes exponential CPU consumption during query evaluation. Because the resource exhaustion persists beyond query completion, repeated requests can fully exhaust the available query worker resources, rendering ES|QL queries unavailable until the node is restarted.</p>", "base64": false}]}], "problemTypes": [{"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-400", "description": "CWE-400 Uncontrolled Resource Consumption"}]}], "providerMetadata": {"orgId": "271b6943-45a9-4f3a-ab4e-976f3fa05b5a", "shortName": "elastic", "dateUpdated": "2026-07-21T23:10:49.155Z"}}, "adp": [{"title": "CISA ADP Vulnrichment", "metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2026-63263", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2026-07-22T13:04:18.223493Z"}}}], "providerMetadata": {"shortName": "CISA-ADP", "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "dateUpdated": "2026-07-22T13:06:57.917Z"}}]}, "cveMetadata": {"cveId": "CVE-2026-63263", "state": "PUBLISHED", "dateUpdated": "2026-07-21T23:10:49.155Z", "dateReserved": "2026-07-16T03:26:51.579Z", "assignerOrgId": "271b6943-45a9-4f3a-ab4e-976f3fa05b5a", "datePublished": "2026-07-21T23:10:49.155Z", "assignerShortName": "elastic"}, "dataVersion": "5.2"}

{}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[9.4.0,9.4.3]"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[9.0.0,9.3.7]"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[8.0.0,8.19.18]"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "Elasticsearch", "source": "cna", "vendor": "Elastic"}, "product": "elasticsearch", "vendor": "elastic"}], "created": "2026-07-22T05:00:07.125832+00:00", "updated": "2026-07-22T05:00:07.125861+00:00", "vendors": ["elastic", "elastic$PRODUCT$elasticsearch"]}