CVE-2026-26935: Improper Input Validation in Kibana Leading to Denial of Service

Published Feb 26, 2026
·
Updated

Improper Input Validation (CWE-20) in the internal Content Connectors search endpoint in Kibana can lead Denial of Service via Input Data Manipulation (CAPEC-153)

Affected Software

4 affected components
Elastic Kibana
Elastic Kibana>=8.4.0<8.19.12
Elastic Kibana>=9.0.0<9.2.6
Elastic Kibana=9.3.0

Event History

Feb 26, 2026
CVE Published
via MITRE·05:05 PM
Data Sourced
via MITRE·05:05 PM
DescriptionSeverityWeakness
Data Sourced
via NVD·06:23 PM
DescriptionSeverityWeaknessAffected Software
Jun 28, 58142
Event
via FIRST·04:48 AM

Frequently Asked Questions

1

What is the severity of CVE-2026-26935?

CVE-2026-26935 has been classified with a severity score that can lead to Denial of Service vulnerabilities in the Kibana application.

2

How do I fix CVE-2026-26935?

To address CVE-2026-26935, ensure that you update your Elastic Kibana to the latest version where this vulnerability is patched.

3

What can exploit CVE-2026-26935?

CVE-2026-26935 can be exploited through improper input validation in the internal Content Connectors search endpoint.

4

What is the impact of CVE-2026-26935?

The impact of CVE-2026-26935 can result in a Denial of Service, disrupting the normal operation of the Kibana service.

5

Which versions of Kibana are affected by CVE-2026-26935?

CVE-2026-26935 affects specific versions of Elastic Kibana prior to the security update that addresses the vulnerability.

Contact

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