CVE-2026-76289 Denial of Service (DoS) through the REST API in Splunk Enterprise
- Exploited in the wild
- Not known
- Fix
- None listed
What is CVE-2026-76289?
CVE-2026-76289 is a medium-severity vulnerability in Splunk Enterprise, published on 21 Oct 2026.
Official description
In Splunk Enterprise versions below 10.4.4, 10.2.8, 10.0.11, and 9.4.16, a user who does not hold the "admin" or "power" Splunk roles could make the Splunk Enterprise instance unavailable to other users by sending a request to the Representational State Transfer (REST) API endpoint for lookup table files. The affected instance requires a restart to restore service. The vulnerability is possible because the endpoint does not limit resource use when it processes response field selections. For more information see Endpoints reference list (https://help.splunk.com/en/splunk-enterprise/rest-api-reference/10.4/introduction/endpoints-reference-list) and 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) in the Splunk documentation.
Weakness: CWE-770
Which versions are affected by CVE-2026-76289?
How do I fix CVE-2026-76289?
No fix has been published for CVE-2026-76289 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-76289 being exploited?
There is no known exploitation of CVE-2026-76289 in the wild and no public exploit code.
Sources
Also known as GHSA-wrp7-mjf8-vj3p.