Improper handling of highly compressed data in Kibana - CVE-2026-72628
Published: September 1, 2026
Vulnerability identifier: #VU146648
CSH Severity: Low
CVSS v4: 7.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-72628
CWE-ID: CWE-409
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote user to cause a denial of service.
The vulnerability exists due to improper handling of highly compressed data in Streams content pack processing when processing specially crafted compressed content. A remote user can supply specially crafted content to cause a denial of service.
Only deployments with Streams enabled and the Streams content packs capability turned on are vulnerable, and neither is enabled in a default installation.
Affected software
Kibana
How to mitigate CVE-2026-72628
Install security update from vendor's website.
Kibana - addressed in versions 8.19.21, 9.4.6, 9.5.2