CVE-2026-78593
Received Received - Intake

Kibana Cribl Integration Configuration Injection Vulnerability

Publication date: 2026-09-03

Last updated on: 2026-09-03

Assigner: Elastic

Description
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.

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Meta Information

Published
2026-09-03
Last Modified
2026-09-03
Generated
2026-09-04
AI Q&A
2026-09-03
EPSS Evaluated
N/A
NVD
CVE-2026-78593
EUVD
EUVD-2026-70658

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
elastic kibana From 7.0.0 (inc)

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Exploitability

CWE
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KEV
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CWE ID Description
CWE-94 The product 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.

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Executive Summary

This vulnerability in Kibana's Cribl integration allows an authenticated user with Fleet management privileges to inject malicious expressions into a server-side script template. This can lead to unauthorized creation of Elasticsearch ingest pipelines that exceed the user's granted permissions.

Detection Guidance

Check Kibana audit logs for unusual Fleet package policy creation activity or unexpected Elasticsearch ingest pipeline configurations related to the Cribl integration. Review user privileges to ensure only trusted users have the 'fleet:all' privilege.

Impact Analysis

An attacker could exploit this to perform unauthorized actions on Elasticsearch, such as creating or modifying ingest pipelines beyond their intended scope. This may lead to data leakage, manipulation, or denial of service if the injected pipeline performs malicious operations.

Compliance Impact

This vulnerability could potentially impact compliance with GDPR and HIPAA by allowing unauthorized modifications to Elasticsearch ingest pipelines. Such unauthorized changes might lead to improper data handling, processing, or storage, which could violate data protection requirements under these regulations. The ability to inject malicious expressions could result in unauthorized access or manipulation of sensitive data, posing risks to data integrity and confidentiality.

Mitigation Strategies

Immediately revoke or restrict Kibana Fleet management privileges for users who do not require them. Review and validate all Cribl integration configurations in Kibana to ensure no unauthorized Elasticsearch ingest pipelines can be created. Monitor Elasticsearch ingest pipeline changes for unexpected modifications.

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