CVE-2026-76251
HighCVSS 7.1Summary
In Splunk Enterprise versions below 10.4.2, 10.2.6, and 10.0.9, a user without the admin or power roles could cause the Splunk App for Splunk Observability Cloud to forward requests to Splunk Observability Cloud, including the stored access token. This is possible because the app's REST API endpoint handlers do not enforce the read_o11y_content capability before forwarding requests. The vulnerability does not affect versions 9.4 and 9.3.
Risk Assessment
The risk includes unauthorized access to data available to the token and the ability to make limited changes to Splunk Observability Cloud content, potentially compromising data confidentiality and integrity.
Recommendation
Upgrade Splunk Enterprise to versions 10.4.2, 10.2.6, or 10.0.9 (or later) and implement appropriate access controls for the app.
Original NVD description (English source)
In Splunk Enterprise versions below 10.4.2, 10.2.6, and 10.0.9, a user who does not hold the "admin" or "power" Splunk roles could cause the Splunk App for Splunk Observability Cloud to forward requests to Splunk Observability Cloud, including the Splunk Observability Cloud access token stored for the app. With this access, the user could view all relevant data available to that token and make limited changes to Splunk Observability Cloud content. The vulnerability does not affect Splunk Enterprise 9.4 and 9.3 versions. The vulnerability is possible because the app's Representational State Transfer (REST) API endpoint handlers do not enforce the read_o11y_content capability before forwarding requests with the stored access token. For more information see Define roles on the Splunk platform with capabilities (https://help.splunk.com/en/splunk-enterprise/administer/manage-users-and-security/10.2/manage-splunk-platform-users-and-roles/define-roles-on-the-splunk-platform-with-capabilities) in the Splunk documentation.