CVE-2026-42399 json
Uncontrolled Resource Consumption in Kibana Leading to Denial of Service
published 5mo ago modified 26d ago also BIT-elk-2026-42399 , BIT-kibana-2026-42399 , EUVD-2026-33031
- 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 26%
- 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 low-privileged user can cause Kibana to consume exponentially increasing amounts of memory by submitting a specially crafted Timelion visualization expression containing deeply chained function calls. The resulting data structure grows without bound, exhausting available memory and causing the Kibana service to crash and become unavailable to all users.
Patch / fix
- bitnami elk 8.19.16, 9.3.5
- bitnami kibana 8.19.16, 9.3.5
- elastic kibana 8.19.16, 9.3.5
- elasticsearch kibana 8.19.16, 9.3.5
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Check with FencerCISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- 5mo ago
Exploit prediction
0.33% chance of exploitation in the next 30 days, higher than 26% of all scored CVEs (FIRST EPSS, 2026-11-09).
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, <8.19.16 >=9.0.0, <9.3.5 |
8.19.16 9.3.5 |
| bitnami | kibana | >=8.0.0, <8.19.16 >=9.0.0, <9.3.5 |
8.19.16 9.3.5 |
Affected products
- Elastic Kibana
Classification
- Weakness
-
- CWE-400 Uncontrolled Resource Consumption
References
-
discuss.elastic.co
/t/kibana-8-19-16-and-9-3-5-security-update-esa-2026-36/386556
vendor-advisory, advisory
-
nvd.nist.gov
/vuln/detail/CVE-2026-42399
web
Sources
- CVE List CVE-2026-42399
- NVD CVE-2026-42399
- OSV BIT-elk-2026-42399
- OSV BIT-kibana-2026-42399
Fencer Intel 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.