CVE-2026-33459 json
Uncontrolled Resource Consumption in Kibana Leading to Denial of Service
published 2026-04-08 7 mo ago modified 2026-09-08 2 mo ago also BIT-elk-2026-33459 , BIT-kibana-2026-33459 , EUVD-2026-20521
- cvss
- 6.5
- 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 20%
- public exploits
- 0
- none known
Summary
Uncontrolled Resource Consumption (CWE-400) in Kibana can lead to denial of service via Excessive Allocation (CAPEC-130). An authenticated user with access to the automatic import feature can submit specially crafted requests with excessively large input values. When multiple such requests are sent concurrently, the backend services become unstable, resulting in service disruption and deployment unavailability for all users.
Patch / fix
- bitnami elk 8.19.14, 9.2.8, 9.3.3
- bitnami kibana 8.19.14, 9.2.8, 9.3.3
- elastic kibana 8.19.14, 9.2.8, 9.3.3
- elasticsearch kibana 8.19.14, 9.2.8, 9.3.3
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- 7 mo ago
Exploit prediction
0.28% chance of exploitation in the next 30 days, higher than 20% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 6.5 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
| OSV | 3.1 | 6.5 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| bitnami | elk | >=8.0.0, <8.19.14 >=9.0.0, <9.2.8 >=9.3.0, <9.3.3 |
8.19.14 9.2.8 9.3.3 |
| bitnami | kibana | >=8.0.0, <8.19.14 >=9.0.0, <9.2.8 >=9.3.0, <9.3.3 |
8.19.14 9.2.8 9.3.3 |
Affected products
- Elastic Kibana
Classification
- Weakness
-
- CWE-400 Uncontrolled Resource Consumption
References
-
discuss.elastic.co
/t/kibana-8-19-14-9-2-8-9-3-3-security-update-esa-2026-26/385814
vendor-advisory, advisory
-
nvd.nist.gov
/vuln/detail/CVE-2026-33459
web
Sources
- CVE List CVE-2026-33459
- NVD CVE-2026-33459
- OSV BIT-elk-2026-33459
- OSV BIT-kibana-2026-33459
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.