CVE-2026-49096

Uncaught Exception in Kibana Cases Leading to Denial of Service

State: Published
Severity: 4.3 Medium
Published: Aug 13, 2026
Updated: Aug 13, 2026
Reserved: May 27, 2026

Description

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.

Scores

CVSS	Score	Vector	Source
3.1	4.3 Medium	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L	elastic

Weaknesses

CWE-248 Uncaught Exception

Affected Products

Product	Versions
KibanaElastic	8.0.0 through 8.19.19Affected 9.0.0 through 9.3.4Affected 9.4.0Affected 9.4.1Affected

References

https://discuss.elastic.co/t/kibana-8-19-20-9-3-5-9-4-2-security-update-esa-2026-136/389492

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