CISA Confirms Active Exploitation of Splunk Enterprise Vulnerability CVE-2026-20253
In June 2026, a critical vulnerability (CVE-2026-20253) was identified in Splunk Enterprise versions 10.2.0 to 10.2.3 and 10.0.0 to 10.0.6, allowing unauthenticated remote attackers to create or truncate arbitrary files via a PostgreSQL sidecar service endpoint lacking authentication controls. This flaw enables potential remote code execution, posing significant risks to affected systems. ([advisory.splunk.com](https://advisory.splunk.com/advisories/SVD-2026-0603?utm_source=openai)) The U.S. Cybersecurity and Infrastructure Security Agency (CISA) has confirmed active exploitation of this vulnerability and has mandated federal agencies to patch their systems by June 22, 2026.
Kill Chain