CVE-2026-76276CWE-1188

CVE-2026-76276

Medium · published October 8, 2026

CVSS v3.1
4.3
EPSS
0%
Percentile
7.2
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
4.3 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
CVSS v4.0
Not supplied
EPSS
0.00180 · 7.2th percentile
Weakness
CWE-1188 · Initialization of a Resource with an Insecure Default
Published
2026-10-08T01:17Z
Affected products (3)
ProductVersionsFixed in
splunk/splunk≥ 10.0.0, < 10.0.1010.0.10
splunk/splunk≥ 10.2.0, < 10.2.710.2.7
splunk/splunk≥ 10.4.0, < 10.4.310.4.3
References (1)
EPSS history
Timeline
  • 09 OCT 03:31Z
    EPSS moved — → 0%
    epss
  • 07 OCT 20:46Z
    Information Disclosure in the Discover Splunk Observability Cloud app through Splunk Web for Splunk Enterprise
    cvelistv5
  • 07 OCT 20:46Z
    Information Disclosure in the Discover Splunk Observability Cloud app through Splunk Web for Splunk Enterprise
    cvelistv5