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vuln-cve/data/2026/72xxx/CVE-2026-72636.json
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{
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"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"
},
"containers": {
"cna": {
"affected": [
{
"defaultStatus": "unaffected",
"product": "Elasticsearch",
"vendor": "Elastic",
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{
"status": "affected",
"versionType": "semver",
"version": "8.0.0",
"lessThanOrEqual": "8.19.19"
},
{
"status": "affected",
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"version": "9.0.0",
"lessThanOrEqual": "9.4.4"
}
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],
"descriptions": [
{
"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.",
"supportingMedia": [
{
"base64": false,
"type": "text/html",
"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>"
}
]
}
],
"metrics": [
{
"format": "CVSS",
"scenarios": [
{
"lang": "en",
"value": "GENERAL"
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],
"cvssV3_1": {
"version": "3.1",
"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"
}
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-674",
"description": "CWE-674 Uncontrolled Recursion",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"orgId": "271b6943-45a9-4f3a-ab4e-976f3fa05b5a",
"shortName": "elastic",
"dateUpdated": "2026-08-13T19:14:03.131Z"
},
"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",
"x_generator": {
"engine": "Elastic CVE Publisher 1.0.0"
},
"impacts": [
{
"capecId": "CAPEC-130",
"descriptions": [
{
"lang": "en",
"value": "CAPEC-130 Excessive Allocation"
}
]
}
]
},
"adp": [
{
"metrics": [
{
"other": {
"type": "ssvc",
"content": {
"timestamp": "2026-08-13T19:29:20.698857Z",
"id": "CVE-2026-72636",
"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": "2026-08-13T20:26:48.047Z"
}
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]
}
}