{"cvss":9.8,"datePublished":"2026-06-15T00:00:00Z","dateUpdated":"2026-06-15T00:00:00Z","description":"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.","dueDate":"2026-06-21T00:00:00Z","id":"CVE-2026-20253","kev_catalogs":["vulncheck"],"knownRansomwareCampaignUse":"Unknown","product":"Enterprise","requiredAction":"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.","severity":"CRITICAL","source":"vulncheck_kev","title":"Splunk Enterprise Missing Authentication for Critical Function Vulnerability","vendor":"Splunk"}