Kibana Cases Uncaught Exception - Denial of Service via Malformed Link
CVE-2026-49096 Published on August 13, 2026
Uncaught Exception in Kibana Cases Leading to Denial of Service
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.
Vulnerability Analysis
CVE-2026-49096 is exploitable with network access, and requires small amount of user privileges. This vulnerability is considered to have a low attack complexity. The potential impact of an exploit of this vulnerability is considered to have no impact on confidentiality and integrity, and a small impact on availability.
Weakness Type
Uncaught Exception
An exception is thrown from a function, but it is not caught. When an exception is not caught, it may cause the program to crash or expose sensitive information.
Products Associated with CVE-2026-49096
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Affected Versions
Elastic Kibana:- Version 8.0.0, <= 8.19.19 is affected.
- Version 9.0.0, <= 9.3.4 is affected.
- Version 9.4.0 is affected.
- Version 9.4.1 is affected.