CVE-2026-20138
Sensitive Information Disclosure in "_internal" index in Splunk Enterprise
Severity
Medium 6.8
CVSS 3.1
Exploited
Not listed
EPSS
0.003
25.8th percentile
Discovered by
Not disclosed
Published
Feb 18, 2026
Assigned by cisco
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.
Weakness: CWE-532
Affected products
| Vendor | Product | Category | Matched by |
|---|---|---|---|
| Cisco | Splunk Enterprise | SIEM & Log Management | cna-assigner |
Vendor-reported products (1)
- Splunk · Splunk Enterprise