CVE-2026-20239 HIGH

CVE-2026-20239: Sensitive Information Disclosure through Log Files in Splunk Enterprise

Vendor Splunk
Product Splunk Enterprise
Weakness CWE-532 · Sensitive info in logs
Published May 20, 2026
Last update May 21, 2026
View on NVD All CVEs

CVSS base score

7.5/10
Attack vector Network
Attack complexity High
Privileges required Low
User interaction None
Confidentiality High
Integrity High

CVSS vector

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

What the vulnerability does

01Description

In Splunk Enterprise versions below 10.2.2 and 10.0.5, and Splunk Cloud Platform versions below 10.3.2512.8, 10.2.2510.11, 10.1.2507.21, and 10.0.2503.13, a user with a role that has access to the `_internal` index could view session cookies and response bodies that contain sensitive data.

Key dates

02Disclosure timeline

May 20, 2026 CVE published
May 21, 2026 Record updated