CVE-2026-26935: Elastic Kibana

High severity, CVSS 7.5. EPSS: 0.5% chance of exploitation in the next 30 days.

Improper Input Validation (CWE-20) in the internal Content Connectors search endpoint in Kibana can lead Denial of Service via Input Data Manipulation (CAPEC-153)

Affected products

• Elastic Kibana: from 8.4.0, before 8.19.12 (fixed in 8.19.12); from 9.0.0, before 9.2.6 (fixed in 9.2.6); version 9.3.0 only

Published 2026-02-26. Last modified 2026-06-17.