CVE-2026-20239

Sensitive Information Disclosure through Log Files in Splunk Enterprise

State: Published
Severity: 7.5 High
Published: May 20, 2026
Updated: May 21, 2026
Reserved: Oct 8, 2025

Description

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.

Scores

CVSS	Score	Vector	Source
3.1	7.5 High	CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H	cisco

Weaknesses

CWE-532 Information written to log files can be of a sensitive nature and give valuable guidance to an attacker or expose sensitive user information.

Affected Products

Product	Versions
Splunk EnterpriseSplunk	10.2 to before 10.2.2Affected 10.0 to before 10.0.5Affected
Splunk Cloud PlatformSplunk	10.3.2512 to before 10.3.2512.8Affected 10.2.2510 to before 10.2.2510.11Affected 10.1.2507 to before 10.1.2507.21Affected 10.0.2503 to before 10.0.2503.13Affected

References

https://advisory.splunk.com/advisories/SVD-2026-0503

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