CVE-2026-49096: Elastic Kibana

Low severity, CVSS 3.5. EPSS: 0.3% chance of exploitation in the next 30 days.

Uncaught Exception (CWE-248) in Kibana Cases can lead to denial of service via Input Data Manipulation (CAPEC-153). Malformed link syntax stored in a case comment was not rejected or sanitized when the comment was later formatted for display, and the resulting unhandled error prevented the affected case from being displayed. An authenticated user holding privileges to comment on a case could store such a comment, after which that case became inaccessible to every user who opened it until the stored comment was removed.

Affected products

• Elastic Kibana: from 8.0.0, before 8.19.20 (fixed in 8.19.20); from 9.0.0, before 9.3.5 (fixed in 9.3.5); from 9.4.0, before 9.4.2 (fixed in 9.4.2)

Published 2026-08-13. Last modified 2026-09-02.