CVE-2026-20138

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.

CVSS v3 6.8 MEDIUM

6.8^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 0.9 / Impact : 5.9

Attack Vector ADJACENT_NETWORK

Attack Complexity LOW

Privileges Required HIGH

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://advisory.splunk.com/advisories/SVD-2026-0203	Vendor Advisory

Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:splunk:splunk:::::enterprise:::*
	cpe:2.3:a:splunk:splunk:::::enterprise:::*
	cpe:2.3:a:splunk:splunk:::::enterprise:::*
	cpe:2.3:a:splunk:splunk:::::enterprise:::*

History

20 Feb 2026, 13:50

Type	Values Removed	Values Added
CPE		cpe:2.3:a:splunk:splunk:::::enterprise:::*
Summary		(es) 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 implementación de Splunk Search Head Cluster (SHC) que posee un rol con acceso al índice '_internal' de Splunk podía ver los secretos 'integrationKey', 'secretKey' y 'appSecretKey', generados por Duo Two-Factor Autenticación para Splunk Enterprise, en texto plano.
References	~~() https://advisory.splunk.com/advisories/SVD-2026-0203 -~~	() https://advisory.splunk.com/advisories/SVD-2026-0203 - Vendor Advisory
First Time		Splunk splunk Splunk

18 Feb 2026, 18:24

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-02-18 18:24

Updated : 2026-02-20 13:50

NVD link : CVE-2026-20138

Mitre link : CVE-2026-20138

CVE.ORG link : CVE-2026-20138

JSON object : View

Products Affected

splunk

splunk

CWE

CWE-532

Insertion of Sensitive Information into Log File

{"id": "CVE-2026-20138", "cveTags": [], "metrics": {"cvssMetricV31": [{"type": "Secondary", "source": "psirt@cisco.com", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 6.8, "attackVector": "ADJACENT_NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:A/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "HIGH", "confidentialityImpact": "HIGH"}, "impactScore": 5.9, "exploitabilityScore": 0.9}, {"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 4.9, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "NONE", "privilegesRequired": "HIGH", "confidentialityImpact": "HIGH"}, "impactScore": 3.6, "exploitabilityScore": 1.2}]}, "published": "2026-02-18T18:24:23.427", "references": [{"url": "https://advisory.splunk.com/advisories/SVD-2026-0203", "tags": ["Vendor Advisory"], "source": "psirt@cisco.com"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Primary", "source": "psirt@cisco.com", "description": [{"lang": "en", "value": "CWE-532"}]}, {"type": "Secondary", "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "description": [{"lang": "en", "value": "CWE-532"}]}], "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 '_internal' de Splunk pod\u00eda ver los secretos 'integrationKey', 'secretKey' y 'appSecretKey', generados por Duo Two-Factor Autenticaci\u00f3n para Splunk Enterprise, en texto plano."}], "lastModified": "2026-02-20T13:50:05.057", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:splunk:splunk:*:*:*:*:enterprise:*:*:*", "vulnerable": true, "matchCriteriaId": "80092DB5-6859-4E0A-BBD6-171051C451A1", "versionEndExcluding": "9.2.11", "versionStartIncluding": "9.2.0"}, {"criteria": "cpe:2.3:a:splunk:splunk:*:*:*:*:enterprise:*:*:*", "vulnerable": true, "matchCriteriaId": "0D9ACC64-CE37-4DBF-9315-E2DA76A3EAD2", "versionEndExcluding": "9.3.9", "versionStartIncluding": "9.3.0"}, {"criteria": "cpe:2.3:a:splunk:splunk:*:*:*:*:enterprise:*:*:*", "vulnerable": true, "matchCriteriaId": "1F057ECE-42B5-4C1D-A201-EFF275EFAAD3", "versionEndExcluding": "9.4.7", "versionStartIncluding": "9.4.0"}, {"criteria": "cpe:2.3:a:splunk:splunk:*:*:*:*:enterprise:*:*:*", "vulnerable": true, "matchCriteriaId": "4413D4BE-F225-4C28-B401-EB46D8F34160", "versionEndExcluding": "10.0.2", "versionStartIncluding": "10.0.0"}], "operator": "OR"}]}], "sourceIdentifier": "psirt@cisco.com"}