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.
History

Tue, 13 Jan 2026 22:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Tue, 13 Jan 2026 21:15:00 +0000

Type Values Removed Values Added
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.
Title Improper Input Validation in Kibana Email Connector Leading to Excessive Allocation
Weaknesses CWE-20
References
Metrics cvssV3_1

{'score': 6.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H'}


cve-icon MITRE

Status: PUBLISHED

Assigner: elastic

Published:

Updated: 2026-01-13T21:25:59.853Z

Reserved: 2025-12-31T12:02:48.756Z

Link: CVE-2026-0543

cve-icon Vulnrichment

Updated: 2026-01-13T21:25:53.582Z

cve-icon NVD

Status : Received

Published: 2026-01-13T21:15:51.170

Modified: 2026-01-13T21:15:51.170

Link: CVE-2026-0543

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.