CVE-2026-42399
Uncontrolled Resource Consumption in Kibana Leading to Denial of Service
CVSS Score
6.5
EPSS Score
0.0%
EPSS Percentile
12th
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.
| CWE | CWE-400 |
| Vendor | elastic |
| Product | kibana |
| Published | May 28, 2026 |
| Last Updated | May 29, 2026 |
Stay Ahead of the Next One
Get instant alerts for elastic kibana
Be the first to know when new medium vulnerabilities affecting elastic kibana are published — delivered to Slack, Telegram or Discord.
Get Free Alerts →
Free · No credit card · 60 sec setup
CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High
Affected Versions
Elastic / Kibana
8.0.0 ≤ 8.19.15 9.0.0 ≤ 9.3.4