CVE-2026-76298 Use of Hard-coded Cryptographic Key in the PostgreSQL Sidecar Service in Splunk Enterprise
- Exploited in the wild
- Not known
- Fix
- None listed
What is CVE-2026-76298?
CVE-2026-76298 is a high-severity vulnerability in Splunk Enterprise, published on 21 Oct 2026.
Official description
In Splunk Enterprise versions below 10.4.4 and 10.2.8, a user who does not hold the "admin" or "power" Splunk roles could derive the PostgreSQL sidecar database superuser password and run arbitrary operating system commands as the user account running Splunk Enterprise on search head cluster members. The vulnerability is possible because the PostgreSQL sidecar service derives a privileged database password from the search head cluster identifier that appears in search job logs. For more information see About configuring role-based user access (https://help.splunk.com/en/splunk-enterprise/administer/manage-users-and-security/10.2/manage-splunk-platform-users-and-roles/about-configuring-role-based-user-access), server.conf (https://help.splunk.com/en/splunk-enterprise/administer/admin-manual/10.2/configuration-file-reference/10.2.0-configuration-file-reference/server.conf), and Sidecar configuration settings (https://help.splunk.com/en/splunk-enterprise/administer/admin-manual/10.4/splunk-sidecars/sidecar-configuration-settings) in the Splunk documentation.
Weakness: CWE-321
Which versions are affected by CVE-2026-76298?
How do I fix CVE-2026-76298?
No fix has been published for CVE-2026-76298 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-76298 being exploited?
There is no known exploitation of CVE-2026-76298 in the wild and no public exploit code.
Sources
Also known as GHSA-jj4w-fcgh-mh9q.