Vulnerability DatabaseCVE-2026-26939
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CVE-2026-26939
Published:March 19, 2026
Updated:May 18, 2026
Missing Authorization (CWE-862) in Kibana’s server-side Detection Rule Management can lead to Unauthorized Endpoint Response Action Configuration (host isolation, process termination, and process suspension) via CAPEC-1 (Accessing Functionality Not Properly Constrained by ACLs). This requires an authenticated attacker with rule management privileges.
Affected Packages
https://github.com/elastic/kibana.git (GITHUB):
Affected version(s) >=v8.0.0 <v8.19.12
Fix Suggestion:
Update to version v8.19.12
https://github.com/elastic/kibana.git (GITHUB):
Affected version(s) =v9.3.0 <v9.3.1
Fix Suggestion:
Update to version v9.3.1
https://github.com/elastic/kibana.git (GITHUB):
Affected version(s) >=v9.0.0 <v9.2.6
Fix Suggestion:
Update to version v9.2.6
Related Resources (1)
https://discuss.elastic.co/t/kibana-8-19-12-9-2-6-9-3-1-security-update-esa-2026-19/385530
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CVSS 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
HIGH
Vulnerable System Availability
NONE
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
HIGH
Availability
NONE
Weakness Type (CWE)
Missing Authorization
CWE-862
EPSS
Base Score:
0.04