Auth bypass in Elastic Kibana
CVE-2026-33461
Incorrect Authorization (CWE-863) in Kibana can lead to information disclosure via Privilege Abuse (CAPEC-122). A user with limited Fleet privileges can exploit an internal API endpoint to retrieve sensitive configuration data, including private keys and authentication tokens, that should only be accessible to users with higher-level settings privileges. The endpoint composes its response by fetching full configuration objects and returning them directly, bypassing the authorization checks enforced by the dedicated settings APIs.
Vulnerability class: Broken Access Control
EPSS: 0.003 (20.4th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.7 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N.
Affected products
- Elastic Kibana — versions 9.3.0, 9.0.0, 8.0.0
Weakness classification (CWE)
References
- security@elastic.co (Vendor Advisory)
Frequently asked questions
- What is CVE-2026-33461?
- CVE-2026-33461 is a high-severity vulnerability in Elastic Kibana, classified under Incorrect Authorization. CVSS score: 7.7/10. Published 2026-04-08.
- How severe is CVE-2026-33461?
- High severity. CVSS v3 base score is 7.7 out of 10.