CVE-2026-72628 Improper Handling of Highly Compressed Data in Kibana Leading to Denial of Service
An authenticated user with Streams privileges can cause a denial of service in Kibana by submitting highly compressed data that exhausts memory.
- 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-2026-72628?
CVE-2026-72628 is a medium-severity denial of service vulnerability in Elastic Kibana, published on 1 Sep 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
Improper Handling of Highly Compressed Data (CWE-409) in Kibana can lead to a denial of service via Excessive Allocation (CAPEC-130). An authenticated user holding Streams management privileges could supply specially crafted content that expands to a far larger volume of data during processing, exhausting the memory available to Kibana. The Kibana process is terminated by the host and remains unavailable to all users until the service is restarted.
Weakness: CWE-409
Which versions are affected by CVE-2026-72628?
It affects 1 product.
Products include Elastic Kibana.
How do I fix CVE-2026-72628?
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-2026-72628 being exploited?
There is no known exploitation of CVE-2026-72628 in the wild and no public exploit code.
Other vulnerabilities in Elastic Kibana
Sources
Also known as GHSA-x7p2-xrmv-3p2x, MINI-2pmr-4wv4-pcch, MINI-7vvg-4r2x-7965, MINI-92vm-ghx3-c24f, MINI-c9cv-88j2-x5xm, MINI-gg83-xvxx-6829 and 2 more.