All vulnerabilities
CVE-2026-76276

Information Disclosure in the Discover Splunk Observability Cloud app through Splunk Web for Splunk Enterprise

Splunk Splunk EnterpriseApplications & CMS
CVSS
4.3Medium
ExploitationNo known exploitationNot in CISA KEV, which does not prove it is unexploitedCISA KEV
Exploit odds (EPSS)0.18%Chance of exploitation activity in the next 30 days, higher than 7% of CVEs. Scored 23 Oct 2026FIRST EPSS
Fixed in10.4.3Also 10.2.7, 10.0.10CVE List
Published7 Oct 2026Updated 8 Oct 2026CVE List

What fixes it

A fixed version on one release line is not the upgrade target for every line. Check your exact version and any vendor backports.

Description

In Splunk Enterprise versions below 10.4.3, 10.2.7, and 10.0.10, a low-privileged user that does not hold the "admin" or "power" Splunk roles could retrieve original source code for the Discover Splunk Observability Cloud app through Splunk Web. The vulnerability is possible because production JavaScript bundles for the app contain embedded source maps that include original source code. For more information see About configuring role-based user access (https://help.splunk.com/en/splunk-enterprise/administer/manage-users-and-security/10.4/manage-splunk-platform-users-and-roles/about-configuring-role-based-user-access), Splunk Observability Cloud previews (https://help.splunk.com/en/splunk-enterprise/search/search-manual/10.4/observability/splunk-observability-cloud-previews), and Navigating Splunk Web (https://help.splunk.com/en/splunk-enterprise/search/search-tutorial/10.4/part-1-getting-started/navigating-splunk-web) in the Splunk documentation.

Splunk Enterprise versions 9.4.x are not affected.

Text from CVE List

Affected versions 3

  • Splunk Enterpriseaffected: 10.4 before 10.4.3CVE List
  • Splunk Enterpriseaffected: 10.2 before 10.2.7CVE List
  • Splunk Enterpriseaffected: 10.0 before 10.0.10CVE List

References 1