/Vulnerability Library

Splunk Enterprise & Cloud Platform - Unrestricted File Upload

CVE-2026-20253
Verified

Description

In Splunk Enterprise versions below 10.2.4 and 10.0.7, and Splunk Cloud Platform versions below 10.4.2604.3 and 10.2.2510.14, an unauthenticated user could create or truncate arbitrary files through a PostgreSQL sidecar service endpoint.<br><br>The vulnerability exists because the PostgreSQL sidecar service endpoint lacks authentication controls, allowing any network-reachable user to invoke file operations without credentials.

Severity

Critical

Published Date

June 12, 2026

Template Author

watchtowrlabs, dhiyaneshdk

CVE-2026-20253.yaml
9.5Severity

CVSS Metrics

References

https://labs.watchtowr.com/why-use-app-level-auth-when-every-database-has-auth-splunk-enterprise-cve-2026-20253-pre-auth-rce/https://github.com/watchtowrlabs/watchTowr-vs-Splunk-CVE-2026-20253/blob/main/watchTowr-vs-Splunk-CVE-2026-20253.py

Remediation Steps

Upgrade to Splunk Enterprise 10.2.4, 10.0.7 and Splunk Cloud Platform 10.4.2604.3, 10.2.2510.14 or later.