Kibana Cribl RCE via Insufficient Validation of Config Field
CVE-2026-78593 Published on September 3, 2026
Improper Control of Generation of Code in Kibana Leading to Privilege Escalation
An insufficiently validated configuration field in Kibana's Cribl integration allows an authenticated user holding Kibana Fleet management privileges to inject attacker-controlled expressions into a server-side script template, resulting in an Elasticsearch ingest pipeline being written beyond the caller's authorized Elasticsearch permissions.
Vulnerability Analysis
CVE-2026-78593 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, with no impact on integrity, and no impact on availability.
Weakness Type
What is a Code Injection Vulnerability?
The software constructs all or part of a code segment using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the syntax or behavior of the intended code segment.
CVE-2026-78593 has been classified to as a Code Injection vulnerability or weakness.
Products Associated with CVE-2026-78593
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Affected Versions
Elastic Kibana:- Version 8.0.0, <= 8.19.20 is affected.
- Version 9.0.0, <= 9.4.5 is affected.
- Version 9.5.0, <= 9.5.2 is affected.