CVE-2026-78586 Allocation of Resources Without Limits or Throttling in Kibana Leading to Denial of Service
An authenticated user can cause Kibana to consume unbounded memory via a crafted request, leading to 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-2026-78586?
CVE-2026-78586 is a medium-severity denial of service vulnerability in Elastic Kibana, published on 2 Sep 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 a denial of service via Excessive Allocation (CAPEC-130). An authenticated user with low-level privileges could submit a specially crafted request that causes Kibana to consume an unbounded amount of memory, rendering it unavailable to all users.
Weakness: CWE-770
Which versions are affected by CVE-2026-78586?
It affects 1 product.
Products include Elastic Kibana.
How do I fix CVE-2026-78586?
Apply the vendor's patch.
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-2026-78586 being exploited?
There is no known exploitation of CVE-2026-78586 in the wild and no public exploit code.
Other vulnerabilities in Elastic Kibana
Sources
Also known as GHSA-w3pm-9jwv-8q3v, MINI-38r4-cmhv-5gm4, MINI-gp59-9cv3-43xx, MINI-h6vm-r3hj-7j86, MINI-hfg2-82ww-8x2q, MINI-mrw7-p2hw-hqpj and 2 more.