CVE-2026-20138
Sensitive Information Disclosure in "_internal" index in Splunk Enterprise
CVSS Score
6.8
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-532 |
| Vendor | splunk |
| Product | splunk enterprise |
| Published | Feb 18, 2026 |
| Last Updated | Feb 26, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:A/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
Affected Versions
Splunk / Splunk Enterprise
10.0 < 10.0.2 9.4 < 9.4.7 9.3 < 9.3.9 9.2 < 9.2.11