Disclosure summary
Splunk Enterprise contains a missing authentication for critical function vulnerability which could allow an unauthenticated user to create or truncate arbitrary files through a PostgreSQL sidecar service endpoint.
CISA remediation guidance
Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.
Source-specific records & product guidance
Sources retain their own attribution and scoring. Follow the original record to confirm affected versions, fixed releases, and configuration conditions.
Splunk Security Advisories · SPLUNK-SVD-2026-0603
Open original source · Updated Oct 06, 2026
Unauthenticated Arbitrary File Creation and Truncation in a PostgreSQL Sidecar Service Endpoint in Splunk Enterprise
Vendor advisory association; do not assume every product in a grouped advisory is affected by each CVE.
Original records & references
PUBLISHED 2026-06-18T00:00:00-04:00
MODIFIED 2026-06-18T00:00:00-04:00
INGESTED 2026-10-06T11:42:57-04:00