CVE-2026-20138 (GCVE-0-2026-20138)
Vulnerability from cvelistv5 – Published: 2026-02-18 16:45 – Updated: 2026-02-19 04:55
VLAI?
Title
Sensitive Information Disclosure in "_internal" index in Splunk Enterprise
Summary
In Splunk Enterprise versions below 10.2.0, 10.0.2, 9.4.7, 9.3.9, and 9.2.11, a user of a Splunk Search Head Cluster (SHC) deployment who holds a role with access to the Splunk `_internal` index could view the `integrationKey`, `secretKey`, and `appSecretKey` secrets, generated by [Duo Two-Factor Authentication for Splunk Enterprise](https://duo.com/docs/splunk), in plain text.
Severity ?
6.8 (Medium)
CWE
- CWE-532 - Information written to log files can be of a sensitive nature and give valuable guidance to an attacker or expose sensitive user information.
Assigner
References
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Splunk | Splunk Enterprise |
Affected:
10.0 , < 10.0.2
(custom)
Affected: 9.4 , < 9.4.7 (custom) Affected: 9.3 , < 9.3.9 (custom) Affected: 9.2 , < 9.2.11 (custom) |
{
"containers": {
"adp": [
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2026-20138",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "no"
},
{
"Technical Impact": "total"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-02-18T00:00:00+00:00",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-532",
"description": "CWE-532 Insertion of Sensitive Information into Log File",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-02-19T04:55:46.886Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"product": "Splunk Enterprise",
"vendor": "Splunk",
"versions": [
{
"lessThan": "10.0.2",
"status": "affected",
"version": "10.0",
"versionType": "custom"
},
{
"lessThan": "9.4.7",
"status": "affected",
"version": "9.4",
"versionType": "custom"
},
{
"lessThan": "9.3.9",
"status": "affected",
"version": "9.3",
"versionType": "custom"
},
{
"lessThan": "9.2.11",
"status": "affected",
"version": "9.2",
"versionType": "custom"
}
]
}
],
"datePublic": "2026-02-18T00:00:00.000Z",
"descriptions": [
{
"lang": "en",
"supportingMedia": [
{
"base64": false,
"type": "text/html",
"value": "In Splunk Enterprise versions below 10.2.0, 10.0.2, 9.4.7, 9.3.9, and 9.2.11, a user of a Splunk Search Head Cluster (SHC) deployment who holds a role with access to the Splunk `_internal` index could view the `integrationKey`, `secretKey`, and `appSecretKey` secrets, generated by [Duo Two-Factor Authentication for Splunk Enterprise](https://duo.com/docs/splunk), in plain text."
}
],
"value": "In Splunk Enterprise versions below 10.2.0, 10.0.2, 9.4.7, 9.3.9, and 9.2.11, a user of a Splunk Search Head Cluster (SHC) deployment who holds a role with access to the Splunk `_internal` index could view the `integrationKey`, `secretKey`, and `appSecretKey` secrets, generated by [Duo Two-Factor Authentication for Splunk Enterprise](https://duo.com/docs/splunk), in plain text."
}
],
"metrics": [
{
"cvssV3_1": {
"baseScore": 6.8,
"baseSeverity": "MEDIUM",
"vectorString": "CVSS:3.1/AV:A/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H",
"version": "3.1"
},
"format": "CVSS",
"scenarios": [
{
"lang": "en",
"value": "GENERAL"
}
]
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-532",
"description": "Information written to log files can be of a sensitive nature and give valuable guidance to an attacker or expose sensitive user information.",
"lang": "en",
"type": "cwe"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-02-18T16:45:33.870Z",
"orgId": "d1c1063e-7a18-46af-9102-31f8928bc633",
"shortName": "cisco"
},
"references": [
{
"url": "https://advisory.splunk.com/advisories/SVD-2026-0203"
}
],
"source": {
"advisory": "SVD-2026-0203"
},
"title": "Sensitive Information Disclosure in \"_internal\" index in Splunk Enterprise"
}
},
"cveMetadata": {
"assignerOrgId": "d1c1063e-7a18-46af-9102-31f8928bc633",
"assignerShortName": "cisco",
"cveId": "CVE-2026-20138",
"datePublished": "2026-02-18T16:45:33.870Z",
"dateReserved": "2025-10-08T11:59:15.381Z",
"dateUpdated": "2026-02-19T04:55:46.886Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"vulnerability-lookup:meta": {
"nvd": "{\"cve\":{\"id\":\"CVE-2026-20138\",\"sourceIdentifier\":\"psirt@cisco.com\",\"published\":\"2026-02-18T18:24:23.427\",\"lastModified\":\"2026-02-20T13:50:05.057\",\"vulnStatus\":\"Analyzed\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In Splunk Enterprise versions below 10.2.0, 10.0.2, 9.4.7, 9.3.9, and 9.2.11, a user of a Splunk Search Head Cluster (SHC) deployment who holds a role with access to the Splunk `_internal` index could view the `integrationKey`, `secretKey`, and `appSecretKey` secrets, generated by [Duo Two-Factor Authentication for Splunk Enterprise](https://duo.com/docs/splunk), in plain text.\"},{\"lang\":\"es\",\"value\":\"En versiones de Splunk Enterprise anteriores a 10.2.0, 10.0.2, 9.4.7, 9.3.9 y 9.2.11, un usuario de una implementaci\u00f3n de Splunk Search Head Cluster (SHC) que posee un rol con acceso al \u00edndice \u0027_internal\u0027 de Splunk pod\u00eda ver los secretos \u0027integrationKey\u0027, \u0027secretKey\u0027 y \u0027appSecretKey\u0027, generados por Duo Two-Factor Autenticaci\u00f3n para Splunk Enterprise, en texto plano.\"}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"psirt@cisco.com\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:A/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H\",\"baseScore\":6.8,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"ADJACENT_NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"HIGH\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"HIGH\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":0.9,\"impactScore\":5.9},{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N\",\"baseScore\":4.9,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"HIGH\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"NONE\"},\"exploitabilityScore\":1.2,\"impactScore\":3.6}]},\"weaknesses\":[{\"source\":\"psirt@cisco.com\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-532\"}]},{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"type\":\"Secondary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-532\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:splunk:splunk:*:*:*:*:enterprise:*:*:*\",\"versionStartIncluding\":\"9.2.0\",\"versionEndExcluding\":\"9.2.11\",\"matchCriteriaId\":\"80092DB5-6859-4E0A-BBD6-171051C451A1\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:splunk:splunk:*:*:*:*:enterprise:*:*:*\",\"versionStartIncluding\":\"9.3.0\",\"versionEndExcluding\":\"9.3.9\",\"matchCriteriaId\":\"0D9ACC64-CE37-4DBF-9315-E2DA76A3EAD2\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:splunk:splunk:*:*:*:*:enterprise:*:*:*\",\"versionStartIncluding\":\"9.4.0\",\"versionEndExcluding\":\"9.4.7\",\"matchCriteriaId\":\"1F057ECE-42B5-4C1D-A201-EFF275EFAAD3\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:splunk:splunk:*:*:*:*:enterprise:*:*:*\",\"versionStartIncluding\":\"10.0.0\",\"versionEndExcluding\":\"10.0.2\",\"matchCriteriaId\":\"4413D4BE-F225-4C28-B401-EB46D8F34160\"}]}]}],\"references\":[{\"url\":\"https://advisory.splunk.com/advisories/SVD-2026-0203\",\"source\":\"psirt@cisco.com\",\"tags\":[\"Vendor Advisory\"]}]}}",
"vulnrichment": {
"containers": "{\"adp\": [{\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2026-20138\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"total\"}], \"version\": \"2.0.3\", \"timestamp\": \"2026-02-18T17:43:49.103790Z\"}}}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-532\", \"description\": \"CWE-532 Insertion of Sensitive Information into Log File\"}]}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2026-02-18T17:43:59.754Z\"}}], \"cna\": {\"title\": \"Sensitive Information Disclosure in \\\"_internal\\\" index in Splunk Enterprise\", \"source\": {\"advisory\": \"SVD-2026-0203\"}, \"metrics\": [{\"format\": \"CVSS\", \"cvssV3_1\": {\"version\": \"3.1\", \"baseScore\": 6.8, \"baseSeverity\": \"MEDIUM\", \"vectorString\": \"CVSS:3.1/AV:A/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H\"}, \"scenarios\": [{\"lang\": \"en\", \"value\": \"GENERAL\"}]}], \"affected\": [{\"vendor\": \"Splunk\", \"product\": \"Splunk Enterprise\", \"versions\": [{\"status\": \"affected\", \"version\": \"10.0\", \"lessThan\": \"10.0.2\", \"versionType\": \"custom\"}, {\"status\": \"affected\", \"version\": \"9.4\", \"lessThan\": \"9.4.7\", \"versionType\": \"custom\"}, {\"status\": \"affected\", \"version\": \"9.3\", \"lessThan\": \"9.3.9\", \"versionType\": \"custom\"}, {\"status\": \"affected\", \"version\": \"9.2\", \"lessThan\": \"9.2.11\", \"versionType\": \"custom\"}]}], \"datePublic\": \"2026-02-18T00:00:00.000Z\", \"references\": [{\"url\": \"https://advisory.splunk.com/advisories/SVD-2026-0203\"}], \"descriptions\": [{\"lang\": \"en\", \"value\": \"In Splunk Enterprise versions below 10.2.0, 10.0.2, 9.4.7, 9.3.9, and 9.2.11, a user of a Splunk Search Head Cluster (SHC) deployment who holds a role with access to the Splunk `_internal` index could view the `integrationKey`, `secretKey`, and `appSecretKey` secrets, generated by [Duo Two-Factor Authentication for Splunk Enterprise](https://duo.com/docs/splunk), in plain text.\", \"supportingMedia\": [{\"type\": \"text/html\", \"value\": \"In Splunk Enterprise versions below 10.2.0, 10.0.2, 9.4.7, 9.3.9, and 9.2.11, a user of a Splunk Search Head Cluster (SHC) deployment who holds a role with access to the Splunk `_internal` index could view the `integrationKey`, `secretKey`, and `appSecretKey` secrets, generated by [Duo Two-Factor Authentication for Splunk Enterprise](https://duo.com/docs/splunk), in plain text.\", \"base64\": false}]}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"cwe\", \"cweId\": \"CWE-532\", \"description\": \"Information written to log files can be of a sensitive nature and give valuable guidance to an attacker or expose sensitive user information.\"}]}], \"providerMetadata\": {\"orgId\": \"d1c1063e-7a18-46af-9102-31f8928bc633\", \"shortName\": \"cisco\", \"dateUpdated\": \"2026-02-18T16:45:33.870Z\"}}}",
"cveMetadata": "{\"cveId\": \"CVE-2026-20138\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-02-19T04:55:46.886Z\", \"dateReserved\": \"2025-10-08T11:59:15.381Z\", \"assignerOrgId\": \"d1c1063e-7a18-46af-9102-31f8928bc633\", \"datePublished\": \"2026-02-18T16:45:33.870Z\", \"assignerShortName\": \"cisco\"}",
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
}
}
Loading…
Loading…
Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
Loading…
Loading…