Improper access control in Splunk Enterprise - CVE-2026-20166

 

Improper access control in Splunk Enterprise - CVE-2026-20166

Published: March 13, 2026


Vulnerability identifier: #VU123995
CSH Severity: Medium
CVSS v4: 5.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-20166
CWE-ID: CWE-284
Exploitation vector: Remote access
Exploit availability: No public exploit available

Vulnerability details

The vulnerability allows a remote user to gain gain access to sensitive information.

The vulnerability exists due to improper access restrictions in the Discover Splunk Observability Cloud app. A remote user can retrieve the Observability Cloud API access token and gain access to sensitive information. 


Affected software

Splunk Enterprise

How to mitigate CVE-2026-20166

Install updates from vendor's website.

Splunk Enterprise - addressed in versions 10.0.4, 10.2.1

External References

Related Security Bulletins