Auth Bypass in Kibana Rule Management (CVE-2026-26939)
CVE-2026-26939 Published on March 19, 2026
Missing Authorization in Kibana Leading to Unauthorized Endpoint Response Action Configuration
Missing Authorization (CWE-862) in Kibanas 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.
Vulnerability Analysis
CVE-2026-26939 can be exploited with network access, and requires small amount of user privileges. This vulnerability is considered to have a low attack complexity. The potential impact of an exploit of this vulnerability is considered to have no impact on confidentiality, a high impact on integrity, and no impact on availability.
Weakness Type
What is an AuthZ Vulnerability?
The software does not perform an authorization check when an actor attempts to access a resource or perform an action.
CVE-2026-26939 has been classified to as an AuthZ vulnerability or weakness.
Products Associated with CVE-2026-26939
Want to know whenever a new CVE is published for Elastic Kibana? stack.watch will email you.
Affected Versions
Elastic Kibana:- Version 9.0.0, <= 9.2.5 is affected.
- Version 9.3.0, <= 9.3.0 is affected.
- Version 8.0.0, <= 8.19.11 is affected.