CVE-2026-42397 json
Allocation of Resources Without Limits or Throttling in Kibana Leading to Denial of Service
published 3mo ago modified 16d ago also BIT-elk-2026-42397 , BIT-kibana-2026-42397 , EUVD-2026-46387
- cvss
- 6.5
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.4%
- EPSS 0.4% chance of exploitation in 30 days, percentile 36%
- public exploits
- 0
- none known
Summary
Allocation of Resources Without Limits or Throttling (CWE-770) in Kibana can lead to a denial of service via Excessive Allocation (CAPEC-130). An authenticated user can submit a specially crafted request to affected Entity Analytics endpoints containing an oversized input value that causes excessive resource consumption, which may render Kibana unavailable.
Patch / fix
- bitnami elk 9.3.7, 9.4.4
- bitnami kibana 9.3.7, 9.4.4
- elastic kibana 9.3.7, 9.4.4
- elasticsearch kibana 9.3.7, 9.4.4
Is CVE-2026-42397 in your dependencies? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.
Check with FencerCISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- 3mo ago
Exploit prediction
0.42% chance of exploitation in the next 30 days, higher than 36% 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 | >=9.3.0, <9.3.7 >=9.4.0, <9.4.4 |
9.3.7 9.4.4 |
| bitnami | kibana | >=9.3.0, <9.3.7 >=9.4.0, <9.4.4 |
9.3.7 9.4.4 |
Affected products
- Elastic Kibana
Classification
- Weakness
-
- CWE-770 Allocation of Resources Without Limits or Throttling
References
-
discuss.elastic.co
/t/kibana-9-3-7-9-4-4-security-update-esa-2026-55/388554/1
vendor-advisory, advisory
-
nvd.nist.gov
/vuln/detail/CVE-2026-42397
web
Sources
- CVE List CVE-2026-42397
- NVD CVE-2026-42397
- OSV BIT-elk-2026-42397
- OSV BIT-kibana-2026-42397
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.