CVE-2026-20253: CRITICAL (CVSS 9.8), Actively Exploited (CISA KEV)

CRITICAL (CVSS 9.8), Actively Exploited (CISA KEV), EPSS 88.2%. In Splunk Enterprise 10.2 versions below 10.2.4 and 10 versions below 10.0.7, an unauthenticated user could create or truncate arbitrary files through a PostgreSQL sidecar service endpoint. The vulnerability exists because the PostgreSQL sidecar service endpoint lacks authentication controls, allowi