CVE-2026-20253 is a CVSS 9.8 pre-auth flaw in Splunk Enterprise's PostgreSQL sidecar service. An unauthenticated attacker can write files and chain the primitive to RCE. A public PoC exists; no workaround, patch only.

How CVE-2026-20253 Turns Splunk’s PostgreSQL Sidecar Into an Open Door on Latest Hacking News | Cyber Security News, Hacking Tools and Penetration Testing Courses.

Rebecca Sutton

Source: LatestHackingNews
Source Link: https://latesthackingnews.com/2026/06/17/splunk-cve-2026-20253-postgresql-sidecar-rce/