CVE-2026-49089 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 submitting an oversized query expression that consumes unbounded 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-2026-49089?
CVE-2026-49089 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 query expression accepted by a connector reporting operation was processed without any limit on its size, and an oversized expression caused the Kibana process to spend an unbounded amount of time evaluating it. An authenticated user with read-only privileges was able to send a single request that left Kibana unable to serve any user until the process was restarted.
Weakness: CWE-770
Which versions are affected by CVE-2026-49089?
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-2026-49089?
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-2026-49089 being exploited?
There is no known exploitation of CVE-2026-49089 in the wild and no public exploit code.
Other vulnerabilities in Elastic Kibana
Sources
Also known as BIT-elk-2026-49089, BIT-kibana-2026-49089, GHSA-qp79-577v-7mj4, MINI-56xf-96qj-7pfg, MINI-84m4-pq43-2gjr, MINI-g9c8-84rq-42fw and 4 more.