CVE-2026-20142 MEDIUM

CVE-2026-20142: Sensitive Information Disclosure in "_internal" index in Splunk Enterprise

Vendor Splunk
Product Splunk Enterprise
Weakness CWE-532 · Sensitive info in logs
Published February 18, 2026
Last update February 26, 2026
View on NVD All CVEs

CVSS base score

6.8/10
Attack vector Adjacent
Attack complexity Low
Privileges required High
User interaction None
Confidentiality High
Integrity High

CVSS vector

CVSS:3.1/AV:A/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

What the vulnerability does

01Description

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 RSA `accessKey` value from the [<u>Authentication.conf</u> ](https://help.splunk.com/en/splunk-enterprise/administer/admin-manual/10.2/configuration-file-reference/10.2.0-configuration-file-reference/authentication.conf)file, in plain text.

Key dates

02Disclosure timeline

February 18, 2026 CVE published
February 26, 2026 Record updated