CVE-2026-20138 – Sensitive Information Disclosure in “_internal” index in Splunk Enterprise

CVE ID : CVE-2026-20138

Published : Feb. 18, 2026, 6:24 p.m. | 35 minutes ago

Description : 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

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