CVE-2026-49094 Uncontrolled Resource Consumption in Kibana Leading to Denial of Service
An authenticated viewer can cause Kibana denial of service by submitting oversized input to an analytics endpoint, exhausting system 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-2026-49094?
CVE-2026-49094 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 denial of service via Excessive Allocation (CAPEC-130). An authenticated user with viewer-level access can submit a request containing an oversized input value to an analytics collections management endpoint. Kibana will consume excessive CPU and memory resources while processing the request. This results in Kibana becoming unavailable to all users until the service is manually recovered.
Weakness: CWE-400
Which versions are affected by CVE-2026-49094?
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 | 8.19.16 |
elk Bitnami | From 8.0.0 | 8.19.16 |
Products include Elastic Kibana.
How do I fix CVE-2026-49094?
Upgrade kibana to 8.19.16 or later.
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-2026-49094 being exploited?
There is no known exploitation of CVE-2026-49094 in the wild and no public exploit code.
Other vulnerabilities in Elastic Kibana
Sources
Also known as BIT-elk-2026-49094, BIT-kibana-2026-49094, GHSA-q4c9-4pm6-jq34, MINI-6vpv-rm6g-95f3, MINI-vxp9-5prv-7gqw.