CVE-2026-20166: Sensitive Information Disclosure in Discover Splunk Observability Cloud app for Splunk Enterprise
In Splunk Enterprise versions below 10.2.1 and 10.0.4, and Splunk Cloud Platform versions below 10.2.2510.5, 10.1.2507.16, and 10.0.2503.12, a low-privileged user that does not hold the "admin" or "power" Splunk roles could retrieve the Observability Cloud API access token through the Discover Splunk Observability Cloud app due to improper access control. This vulnerability does not affect Splunk Enterprise versions below 9.4.9 and 9.3.10 because the Discover Splunk Observability Cloud app does not come with Splunk Enterprise.
Affected Software
Event History
Frequently Asked Questions
What is the severity of CVE-2026-20166?
CVE-2026-20166 is classified as a low-risk vulnerability due to sensitive information disclosure.
What versions are affected by CVE-2026-20166?
CVE-2026-20166 affects Splunk Enterprise versions below 10.2.1 and 10.0.4, and Splunk Cloud Platform versions below 10.2.2510.5, 10.1.2507.16, and 10.0.2503.12.
How can I fix CVE-2026-20166?
To mitigate CVE-2026-20166, upgrade to Splunk Enterprise version 10.2.1 or higher, or Splunk Cloud Platform version 10.2.2510.5 or higher.
Who can exploit CVE-2026-20166?
CVE-2026-20166 can be exploited by low-privileged users who do not hold admin or power user roles.
What is the potential impact of CVE-2026-20166?
The potential impact of CVE-2026-20166 is the unauthorized disclosure of sensitive information within Splunk applications.