Elastic security advisory (AV26-1021)

Serial number: AV26-1021Date: October 8, 2026 As of October 6, 2026, Elastic is affected by vulnerabilities in the following products: Elasticsearch Prior to or equal to 8.19.23 Prior to or equal to 9.4.8 Prior to or equal to 9.5.5 Kibana Prior to or equal to 8.19.22 Prior to or equal to 9.4.7 Prior to or equal to 9.5.4 The Cyber Centre encourages users and administrators to review the provided web links and apply any necessary updates as they become available. Elasticsearch 8.19.23, 9.4.8, 9.5.5 Security Update (ESA-2026-185) - Security Announcements - Discuss the Elastic Stack Kibana 8.19.22, 9.4.7, 9.5.4 Security Update (ESA-2026-187) - Security Announcements - Discuss the Elastic Stack Elastic Security Announcements