CVE-2026-72659 Allocation of Resources Without Limits or Throttling in Kibana Leading to Denial of Service
An authenticated low-privileged user can cause a denial of service in Kibana by submitting a malformed payload to a visualization feature, exhausting memory.
- 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-2026-72659?
CVE-2026-72659 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 denial of service via Excessive Allocation (CAPEC-130). A specially crafted, malformed payload submitted to a Kibana visualization feature by an authenticated user holding only low-privileged access is not correctly validated before use. Processing the request causes unbounded memory growth in the Kibana process, which is terminated by the host once available memory is exhausted. Kibana then becomes unavailable to all users until the service is restarted.
Weakness: CWE-770
Which versions are affected by CVE-2026-72659?
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-2026-72659?
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-2026-72659 being exploited?
There is no known exploitation of CVE-2026-72659 in the wild and no public exploit code.
Other vulnerabilities in Elastic Kibana
Sources
Also known as BIT-elk-2026-72659, BIT-kibana-2026-72659, GHSA-g48r-38gh-835c, MINI-53r9-w7gh-h342, MINI-6xqj-p9qj-7pp4, MINI-f9hw-qqm3-c75m and 4 more.