Vulnerability · Published Oct 7, 2026 · Assigned by cisco
CVE-2026-76271Denial of Service (DoS) in the Discover Splunk Observability Cloud app for Splunk Enterprise
Medium 6.5
In plain English
A medium-severity security flaw in Splunk Enterprise from Splunk. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 29% of all known vulnerabilities).
Official 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 cause a denial of service against a Representational State Transfer (REST) API endpoint in the Discover Splunk Observability Cloud app. The vulnerability is possible because the app uses an inefficient regular expression to validate input submitted through the endpoint. 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 restmap.conf (https://help.splunk.com/en/splunk-enterprise/administer/admin-manual/10.4/configuration-file-reference/10.4.0-configuration-file-reference/restmap.conf) in the Splunk documentation. Splunk Enterprise versions 9.4.x are not affected.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Splunk | Splunk Enterprise | 10.4 – before 10.4.310.2 – before 10.2.710.0 – before 10.0.10 |
Weakness: CWE-407 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H