What’s Vulnerable › Vulnerabilities
CVE-2026-49096: Uncaught Exception in Kibana Cases Leading to Denial of Service
- Severity: low (CVSS 3.5 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.3% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2026-08-13 · updated 2026-09-02
- Weakness: CWE-248
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.
Affected products
- Kibana: from 8.0.0 before 8.19.20; from 9.0.0 before 9.3.5; from 9.4.0 before 9.4.2 — fixed in 8.19.20, 9.3.5, 9.4.2
How to fix
Upgrade to a fixed version: Kibana 8.19.20, 9.3.5, 9.4.2. Check the vendor advisory for mitigations.
References
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