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CVE-2026-0543

NVD

https://nvd.nist.gov/vuln/detail/CVE-2026-0543

Severity

6.5

Medium

CVSS V3

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Summary

Improper Input Validation in Kibana Email Connector Leading to Excessive Allocation

Description

Improper Input Validation (CWE-20) in Kibana's Email Connector can allow an attacker to cause an Excessive Allocation (CAPEC-130) through a specially crafted email address parameter. This requires an attacker to have authenticated access with view-level privileges sufficient to execute connector actions. The application attempts to process specially crafted email format, resulting in complete service unavailability for all users until manual restart is performed.

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