CVE-2026-72667 Allocation of Resources Without Limits or Throttling in Kibana Leading to Denial of Service
An authenticated user can cause a denial of service in Kibana by triggering unbounded resource allocation in the Observability log analysis feature.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-72667?
CVE-2026-72667 is a medium-severity denial of service vulnerability in Elastic Kibana, published on 13 Aug 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
Allocation of Resources Without Limits or Throttling (CWE-770) in Kibana can lead to a denial of service via Excessive Allocation (CAPEC-130). A specially crafted request submitted by an authenticated user with minimal privileges to a validation capability of the Observability log analysis feature causes Kibana to perform an unbounded amount of concurrent work. This can exhaust the memory available to the Kibana process and make Kibana unavailable to all users until it is restarted. The severity of the outcome depends on the resources allocated to the deployment; on well-provisioned deployments a single request may cause degraded performance and elevated memory pressure rather than a full outage, but the request is inexpensive to repeat.
Weakness: CWE-770
Which versions are affected by CVE-2026-72667?
2 open source packages ship an affected version, including kibana and elk. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
kibana Bitnami | From 8.0.0 | 8.19.20, 9.4.5 |
elk Bitnami | From 8.0.0 | 8.19.20, 9.4.5 |
Products include Elastic Kibana.
How do I fix CVE-2026-72667?
Upgrade kibana to a fixed version for your release line: 8.19.20 or 9.4.5.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2026-72667 being exploited?
There is no known exploitation of CVE-2026-72667 in the wild and no public exploit code.
Other vulnerabilities in Elastic Kibana
Sources
Also known as BIT-elk-2026-72667, BIT-kibana-2026-72667, GHSA-2qxp-q7cq-6v7x, MINI-7vhq-fwrf-4xvv, MINI-c8wr-4w3j-7jj7, MINI-j6jc-76qh-867v and 4 more.