CVE-2026-26935

Improper Input Validation in Kibana Leading to Denial of Service

State: Published
Severity: 6.5 Medium
Published: Feb 26, 2026
Updated: Feb 26, 2026
Reserved: Feb 16, 2026

Description

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)

Scores

CVSS	Score	Vector	Source
3.1	6.5 Medium	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H	elastic

Weaknesses

CWE-20 Improper Input Validation

Affected Products

Product	Versions
KibanaElastic	9.3.0 through 9.3.0Affected 8.4.0 through 8.19.11Affected 9.0.0 through 9.2.5Affected

References

https://discuss.elastic.co/t/kibana-8-19-12-9-2-6-9-3-1-security-update-esa-2026-13/385249

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