# CVE-2026-76298: Use of Hard-coded Cryptographic Key in the PostgreSQL Sidecar Service in Splunk Enterprise

> CVE-2026-76298: Use of Hard-coded Cryptographic Key in the PostgreSQL Sidecar Service in Splunk Enterprise. CVSS 8.8 (CVSS 3.1).

Canonical: https://rewindex.com/cve/CVE-2026-76298
Last updated: 2026-10-23T04:18:17Z

- Published: 2026-10-21 22:52 UTC · Updated: 2026-10-23 04:18 UTC · Assigner: cisco
- CVSS: 8.8 (CVSS 3.1) · Severity: High · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- EPSS: 0.35%, 29th percentile (scored 2026-10-25)
- CISA KEV: no
- CWE: CWE-321

## 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.

## Affected vendors and products

- Splunk: Splunk Enterprise

## Tracked companies

- [Splunk](https://rewindex.com/company/splunk.md)

## References

- [CVE record on cve.org](https://www.cve.org/CVERecord?id=CVE-2026-76298)
- [NVD entry](https://nvd.nist.gov/vuln/detail/CVE-2026-76298)
- [https://advisory.splunk.com/advisories/SVD-2026-1007](https://advisory.splunk.com/advisories/SVD-2026-1007)

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_Sources: CVE records from the CVE Program (cve.org). CVE® is a registered trademark of The MITRE Corporation. (https://www.cve.org/) This product uses data from the NVD API but is not endorsed or certified by the NVD. (https://nvd.nist.gov/) Known Exploited Vulnerabilities catalog from CISA. (https://www.cisa.gov/known-exploited-vulnerabilities-catalog) EPSS scores from FIRST (Exploit Prediction Scoring System). (https://www.first.org/epss/)_


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Canonical: https://rewindex.com/cve/CVE-2026-76298 · Markdown: https://rewindex.com/cve/CVE-2026-76298.md · JSON: https://rewindex.com/api/v1/cves/CVE-2026-76298 · Data licensed CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/) · Generated 2026-10-26T03:09:48.368Z