Vulnerability details
CVE-2026-76298
Use of Hard-coded Cryptographic Key in the PostgreSQL Sidecar Service in Splunk Enterprise
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.
CVSS scores
| Score | Version | Source | Vector |
|---|---|---|---|
| 8.8High | 3.1 | CVEProject cvelistV5 (CNA) (cisco) | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
Affected products
| Vendor | Product | Versions | Source |
|---|---|---|---|
| Splunk | Splunk Enterprise | 10.2 ≤ v < 10.2.8 | CVEProject cvelistV5 (CNA) |
| Splunk | Splunk Enterprise | 10.4 ≤ v < 10.4.4 | CVEProject cvelistV5 (CNA) |
References and advisories
1Details
- Published
- 2026-10-22
- Last updated
- 2026-10-23
- State
- Published
- Assigner (CNA)
- cisco
Exploit prediction (EPSS)
SSVC assessment (CISA)
- Automatable
- No
- Exploitation
- None
- Technical impact
- Total
Weaknesses (CWE)
- CWE-321The use of a hard-coded cryptographic key significantly increases the possibility that encrypted data may be recovered.