CVE-2026-72660 Uncaught Exception in Kibana Leading to Denial of Service
A low-privileged authenticated user can crash the Kibana service by submitting specially crafted data, causing a denial of service for all users.
- 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-2026-72660?
CVE-2026-72660 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
Uncaught Exception (CWE-248), resulting from Improper Input Validation (CWE-20), in Kibana can lead to denial of service via Input Data Manipulation (CAPEC-153). An authenticated user holding only low-privileged access can cause an internal error condition in Kibana by supplying specially crafted data. The resulting error is raised on an execution path so it propagates as an uncaught exception and terminates the Kibana process. Kibana is unavailable to all users until the service is restarted, and the condition can be triggered repeatedly.
Weakness: CWE-248
Which versions are affected by CVE-2026-72660?
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, 9.3.8, 9.4.5 |
elk Bitnami | From 8.0.0 | 8.19.20, 9.3.8, 9.4.5 |
Products include Elastic Kibana.
How do I fix CVE-2026-72660?
Upgrade kibana to a fixed version for your release line: 8.19.20, 9.3.8 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-2026-72660 being exploited?
There is no known exploitation of CVE-2026-72660 in the wild and no public exploit code.
Other vulnerabilities in Elastic Kibana
Sources
Also known as BIT-elk-2026-72660, BIT-kibana-2026-72660, GHSA-7p5f-mrpf-cqr2, MINI-34m7-vp36-ggqv, MINI-3wg9-mhjp-9q3r, MINI-5hvq-jhq4-phj7 and 4 more.