CVE-2026-78593

Improper Control of Generation of Code in Kibana Leading to Privilege Escalation

State: Published
Severity: 4.3 Medium
Published: Sep 3, 2026
Updated: Sep 3, 2026
Reserved: Aug 24, 2026

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.

Scores

CVSS	Score	Vector	Source
3.1	4.3 Medium	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N	elastic

Weaknesses

CWE-94 Improper Control of Generation of Code ('Code Injection')

Affected Products

Product	Versions
KibanaElastic	8.0.0 through 8.19.20Affected 9.0.0 through 9.4.5Affected 9.5.0 through 9.5.2Affected

References

https://discuss.elastic.co/t/kibana-8-19-21-9-4-6-9-5-3-security-update-esa-2026-151/390159

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