CVE-2026-0543
January 13, 2026
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.
Affected Packages
https://github.com/elastic/kibana.git (GITHUB):
Affected version(s) >=v9.2.0 <v9.2.4Fix Suggestion:
Update to version v9.2.4https://github.com/elastic/kibana.git (GITHUB):
Affected version(s) >=v8.0.0 <v8.19.10Fix Suggestion:
Update to version v8.19.10https://github.com/elastic/kibana.git (GITHUB):
Affected version(s) >=v9.0.0 <v9.1.10Fix Suggestion:
Update to version v9.1.10Related Resources (1)
Do you need more information?
Contact UsCVSS v4
Base Score:
7.1
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
LOW
User Interaction
NONE
Vulnerable System Confidentiality
NONE
Vulnerable System Integrity
NONE
Vulnerable System Availability
HIGH
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
6.5
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Weakness Type (CWE)
EPSS
Base Score:
0.10
