CVE-2026-26936: Elastic Kibana

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

Inefficient Regular Expression Complexity (CWE-1333) in the AI Inference Anonymization Engine in Kibana can lead Denial of Service via Regular Expression Exponential Blowup (CAPEC-492).

Affected products

• Elastic Kibana: from 8.0.0, before 8.19.11 (fixed in 8.19.11); from 9.0.0, before 9.2.5 (fixed in 9.2.5)

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