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vuln-cve/data/2026/20xxx/CVE-2026-20202.json
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{
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"cveMetadata": {
"cveId": "CVE-2026-20202",
"assignerOrgId": "d1c1063e-7a18-46af-9102-31f8928bc633",
"state": "PUBLISHED",
"assignerShortName": "cisco",
"dateReserved": "2025-10-08T11:59:15.397Z",
"datePublished": "2026-04-15T15:17:43.871Z",
"dateUpdated": "2026-04-16T03:55:28.582Z"
},
"containers": {
"cna": {
"affected": [
{
"product": "Splunk Enterprise",
"vendor": "Splunk",
"versions": [
{
"version": "10.2",
"status": "affected",
"versionType": "custom",
"lessThan": "10.2.2"
},
{
"version": "10.0",
"status": "affected",
"versionType": "custom",
"lessThan": "10.0.5"
},
{
"version": "9.4",
"status": "affected",
"versionType": "custom",
"lessThan": "9.4.10"
},
{
"version": "9.3",
"status": "affected",
"versionType": "custom",
"lessThan": "9.3.11"
}
]
},
{
"product": "Splunk Cloud Platform",
"vendor": "Splunk",
"versions": [
{
"version": "10.4.2603",
"status": "affected",
"versionType": "custom",
"lessThan": "Not Affected"
},
{
"version": "10.3.2512",
"status": "affected",
"versionType": "custom",
"lessThan": "10.3.2512.6"
},
{
"version": "10.2.2510",
"status": "affected",
"versionType": "custom",
"lessThan": "10.2.2510.10"
},
{
"version": "10.1.2507",
"status": "affected",
"versionType": "custom",
"lessThan": "10.1.2507.20"
},
{
"version": "10.0.2503",
"status": "affected",
"versionType": "custom",
"lessThan": "10.0.2503.13"
},
{
"version": "9.3.2411",
"status": "affected",
"versionType": "custom",
"lessThan": "9.3.2411.127"
}
]
}
],
"descriptions": [
{
"lang": "en",
"supportingMedia": [
{
"base64": false,
"type": "text/html",
"value": "In Splunk Enterprise versions below 10.2.2, 10.0.5, 9.4.10, and 9.3.11, and Splunk Cloud Platform versions below 10.4.2603.0, 10.3.2512.6, 10.2.2510.10, 10.1.2507.20, 10.0.2503.13, and 9.3.2411.127, a user who holds a role that contains the high-privilege capability `edit_user`could create a specially crafted username that includes a null byte or a non-UTF-8 percent-encoded byte due to improper input validation.<br><br>This could lead to inconsistent conversion of usernames into a proper format for storage and account management inconsistencies, such as being unable to edit or delete affected users."
}
],
"value": "In Splunk Enterprise versions below 10.2.2, 10.0.5, 9.4.10, and 9.3.11, and Splunk Cloud Platform versions below 10.4.2603.0, 10.3.2512.6, 10.2.2510.10, 10.1.2507.20, 10.0.2503.13, and 9.3.2411.127, a user who holds a role that contains the high-privilege capability `edit_user`could create a specially crafted username that includes a null byte or a non-UTF-8 percent-encoded byte due to improper input validation.<br><br>This could lead to inconsistent conversion of usernames into a proper format for storage and account management inconsistencies, such as being unable to edit or delete affected users."
}
],
"references": [
{
"url": "https://advisory.splunk.com/advisories/SVD-2026-0401"
}
],
"title": "Improper Input Validation during User Account Creation in Splunk Enterprise",
"datePublic": "2026-04-15T00:00:00.000Z",
"metrics": [
{
"cvssV3_1": {
"vectorString": "CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H",
"version": "3.1",
"baseScore": 6.6,
"baseSeverity": "MEDIUM"
},
"format": "CVSS",
"scenarios": [
{
"lang": "en",
"value": "GENERAL"
}
]
}
],
"problemTypes": [
{
"descriptions": [
{
"lang": "en",
"type": "cwe",
"description": "The software does not properly handle when an input contains Unicode encoding.",
"cweId": "CWE-176"
}
]
}
],
"source": {
"advisory": "SVD-2026-0401"
},
"credits": [
{
"lang": "en",
"value": "Ryan Luke<br><br>Mahfujur Rahman (mahfujwhh)"
}
],
"providerMetadata": {
"orgId": "d1c1063e-7a18-46af-9102-31f8928bc633",
"shortName": "cisco",
"dateUpdated": "2026-04-15T15:17:43.871Z"
}
},
"adp": [
{
"metrics": [
{
"other": {
"type": "ssvc",
"content": {
"timestamp": "2026-04-15T00:00:00+00:00",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "no"
},
{
"Technical Impact": "total"
}
],
"role": "CISA Coordinator",
"version": "2.0.3",
"id": "CVE-2026-20202"
}
}
}
],
"title": "CISA ADP Vulnrichment",
"providerMetadata": {
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP",
"dateUpdated": "2026-04-16T03:55:28.582Z"
}
}
]
}
}