CVE-2026-49096 json
Uncaught Exception in Kibana Cases Leading to Denial of Service
published 2026-08-13 2 mo ago modified 2026-09-10 1 mo ago also BIT-elk-2026-49096 , BIT-kibana-2026-49096 , EUVD-2026-58223
- cvss
- 4.3
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.3%
- EPSS 0.3% chance of exploitation in 30 days, percentile 21%
- public exploits
- 0
- none known
Summary
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.
Patch / fix
- bitnami elk 8.19.20, 9.3.5, 9.4.2
- bitnami kibana 8.19.20, 9.3.5, 9.4.2
- elastic kibana 8.19.20, 9.3.5, 9.4.2
- elasticsearch kibana 8.19.20, 9.3.5, 9.4.2
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- 2 mo ago
Exploit prediction
0.29% chance of exploitation in the next 30 days, higher than 21% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 4.3 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L |
| NVD | 3.1 | 3.5 | CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:L |
| OSV | 3.1 | 4.3 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| bitnami | elk | >=8.0.0, <8.19.20 >=9.0.0, <9.3.5 >=9.4.0, <9.4.2 |
8.19.20 9.3.5 9.4.2 |
| bitnami | kibana | >=8.0.0, <8.19.20 >=9.0.0, <9.3.5 >=9.4.0, <9.4.2 |
8.19.20 9.3.5 9.4.2 |
Affected products
- Elastic Kibana
Classification
- Weakness
-
- CWE-248 Uncaught Exception
References
-
discuss.elastic.co
/t/kibana-8-19-20-9-3-5-9-4-2-security-update-esa-2026-136/389492
vendor-advisory, advisory
-
nvd.nist.gov
/vuln/detail/CVE-2026-49096
web
Sources
- CVE List CVE-2026-49096
- NVD CVE-2026-49096
- OSV BIT-elk-2026-49096
- OSV BIT-kibana-2026-49096
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.
CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.