CVE-2026-33464 Uncontrolled Resource Consumption in Kibana Leading to Denial of Service
An authenticated low-privileged user can cause a denial of service in Kibana by submitting oversized payloads to internal APIs, exhausting resources.
- 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-2026-33464?
CVE-2026-33464 is a medium-severity denial of service vulnerability in Elastic Kibana, published on 28 May 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
Uncontrolled Resource Consumption (CWE-400) in Kibana can lead to a denial of service via Excessive Allocation (CAPEC-130). An authenticated user holding a low-privileged role can submit a specially crafted, oversized payload to an internal Kibana API, causing the Kibana process to exhaust available resources and become unresponsive to all users until the service recovers or is restarted.
Weakness: CWE-400
Which versions are affected by CVE-2026-33464?
2 open source packages ship an affected version, including kibana and elk. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
kibana Bitnami | All versions | 9.3.5, 9.4.1 |
elk Bitnami | All versions | 9.3.5, 9.4.1 |
Products include Elastic Kibana.
How do I fix CVE-2026-33464?
Upgrade kibana to a fixed version for your release line: 9.3.5 or 9.4.1.
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-2026-33464 being exploited?
There is no known exploitation of CVE-2026-33464 in the wild and no public exploit code.
Other vulnerabilities in Elastic Kibana
Sources
Also known as BIT-elk-2026-33464, BIT-kibana-2026-33464, GHSA-r7m3-v6c2-v4vr, MINI-2m47-x5vc-x53p, MINI-89xw-r83p-88px, MINI-fh3h-cjgx-8f8q and 5 more.