Input validation error in Kibana - CVE-2026-26934
Published: February 27, 2026
Vulnerability identifier: #VU123317
CSH Severity: Medium
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-2026-26934
CWE-ID: CWE-20
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote user to perform a denial of service (DoS) attack.
The vulnerability exists due to insufficient validation of user-supplied input. A remote user with view-only privileges can pass specially crafted input to the application and perform a denial of service (DoS) attack.
Affected software
Kibana
How to mitigate CVE-2026-26934
Install updates from vendor's website.
Kibana - addressed in versions 8.19.12, 9.2.6, 9.3.1