CVE-2026-78583
High
Description
Incorrect Authorization (CWE-863) in Kibana can lead to privilege escalation via Input Data Manipulation (CAPEC-153). Elasticsearch cluster privilege declarations originating from integration packages were not validated before being used to mint credentials for enrolled Elastic Agents. A user holding Fleet management privileges could therefore cause every Elastic Agent on a targeted policy to receive a credential carrying arbitrarily elevated Elasticsearch cluster privileges, up to and including full cluster administration.
SeverityHigh
CVSS8.1
Exploit probability—
Product
Elastic Kibana
PublishedSep 3, 2026
First seenSep 3, 2026
Weakness typeCWE-863Incorrect authorization
How to fix
Update
- elastic kibana8.19.21, 9.4.6, 9.5.3 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| elastic kibana | 8.0.0 ≤ v < 8.19.21, 9.0.0 ≤ v < 9.4.6, 9.5.0 ≤ v < 9.5.3 | 8.19.21, 9.4.6, 9.5.3 |
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