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I. Basic Information for CVE-2026-0543
Vulnerability Information

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Vulnerability Title
Improper Input Validation in Kibana Email Connector Leading to Excessive Allocation
Source: NVD (National Vulnerability Database)
Vulnerability 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.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Source: NVD (National Vulnerability Database)
Vulnerability Type
输入验证不恰当
Source: NVD (National Vulnerability Database)
Vulnerability Title
Elastic Kibana Email Connector 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Elastic Kibana Email Connector是荷兰Elastic公司的一个电子邮件服务连接组件。 Elastic Kibana Email Connector存在安全漏洞,该漏洞源于输入验证不当,可能导致通过特制电子邮件地址参数进行过度分配,造成服务完全不可用。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
VendorProductAffected VersionsCPESubscribe
ElasticKibana 8.0.0 ~ 8.19.9 -
II. Public POCs for CVE-2026-0543
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III. Intelligence Information for CVE-2026-0543
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