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    "cveMetadata": {
        "cveId": "CVE-2026-72636",
        "assignerOrgId": "271b6943-45a9-4f3a-ab4e-976f3fa05b5a",
        "state": "PUBLISHED",
        "assignerShortName": "elastic",
        "dateReserved": "2026-08-10T11:17:29.887Z",
        "datePublished": "2026-08-13T19:14:03.131Z",
        "dateUpdated": "2026-08-13T20:26:48.047Z"
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                    "defaultStatus": "unaffected",
                    "product": "Elasticsearch",
                    "vendor": "Elastic",
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                            "status": "affected",
                            "versionType": "semver",
                            "version": "8.0.0",
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                    "lang": "en",
                    "value": "Uncontrolled Recursion (CWE-674) in the Elasticsearch wildcard matching helper can lead to a denial of service via Excessive Allocation (CAPEC-130). The matcher used to resolve wildcard patterns against names is implemented recursively and had no bound on recursion depth or on the total number of match operations performed. A search request containing a wildcard pattern with a large number of wildcard groups, evaluated against a sufficiently long name, exhausts the thread stack. Elasticsearch treats a stack overflow as an unrecoverable condition and shuts the node down, so the request terminates the affected node rather than failing gracefully.",
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                            "value": "<p>Uncontrolled Recursion (CWE-674) in the Elasticsearch wildcard matching helper can lead to a denial of service via Excessive Allocation (CAPEC-130). The matcher used to resolve wildcard patterns against names is implemented recursively and had no bound on recursion depth or on the total number of match operations performed. A search request containing a wildcard pattern with a large number of wildcard groups, evaluated against a sufficiently long name, exhausts the thread stack. Elasticsearch treats a stack overflow as an unrecoverable condition and shuts the node down, so the request terminates the affected node rather than failing gracefully.</p>"
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                        "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
                        "baseScore": 6.5,
                        "baseSeverity": "MEDIUM",
                        "attackVector": "NETWORK",
                        "attackComplexity": "LOW",
                        "privilegesRequired": "LOW",
                        "userInteraction": "NONE",
                        "scope": "UNCHANGED",
                        "confidentialityImpact": "NONE",
                        "integrityImpact": "NONE",
                        "availabilityImpact": "HIGH"
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                    "descriptions": [
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                            "cweId": "CWE-674",
                            "description": "CWE-674 Uncontrolled Recursion",
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            "providerMetadata": {
                "orgId": "271b6943-45a9-4f3a-ab4e-976f3fa05b5a",
                "shortName": "elastic",
                "dateUpdated": "2026-08-13T19:14:03.131Z"
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            "references": [
                {
                    "url": "https://discuss.elastic.co/t/elasticsearch-8-19-20-9-4-5-security-update-esa-2026-133/389499"
                }
            ],
            "source": {
                "discovery": "Elastic"
            },
            "title": "Uncontrolled Recursion in Elasticsearch Wildcard Matching Leading to Denial of Service",
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            "impacts": [
                {
                    "capecId": "CAPEC-130",
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                            "lang": "en",
                            "value": "CAPEC-130 Excessive Allocation"
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        "adp": [
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                            "type": "ssvc",
                            "content": {
                                "timestamp": "2026-08-13T19:29:20.698857Z",
                                "id": "CVE-2026-72636",
                                "options": [
                                    {
                                        "Exploitation": "none"
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                                "role": "CISA Coordinator",
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                "title": "CISA ADP Vulnrichment",
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