What’s Vulnerable › Vulnerabilities
CVE-2026-78606: Incorrect Authorization in Kibana Leading to Unauthorized Disclosure, Modification, and Deletion of Data
- Severity: medium (CVSS 4.2 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.2% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2026-09-01 · updated 2026-09-02
- Weakness: CWE-863
Description
Incorrect Authorization (CWE-863) in Kibana can lead to unauthorized disclosure, modification, and deletion of data via Accessing Functionality Not Properly Constrained by ACLs (CAPEC-1). Where two authenticated principals originating from different authentication realms share the same username value, one could read, modify, and delete the other's private Elastic AI Assistant Knowledge Base entries.
Affected products
- Kibana: from 8.19.11 before 8.19.21; from 9.3.0 before 9.4.6; from 9.5.0 before 9.5.2 — fixed in 8.19.21, 9.4.6, 9.5.2
How to fix
Upgrade to a fixed version: Kibana 8.19.21, 9.4.6, 9.5.2. Check the vendor advisory for mitigations.
References
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