Description
Wazuh versions from 4.6.0 before 4.14.8 contain an authentication bypass vulnerability where security.update_user places the reserved user guard and password policy inside a falsy truthiness check. A delegated user administrator can send an empty password to the user update endpoint, bypassing the reserved user guard to take over the wazuh superuser account and authenticate with empty credentials.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Wazuh | wazuh-manager | 4.6.0 – < 4.14.8 | 4.14.8 |
Advisories 1
- WID-SEC-2026-3878 Wazuh: Mehrere Schwachstellen BSI CERT-Bund (WID) · Oct 13, 2026
References
- GitHub Security Advisory (GHSA-27gv-q7q6-f5qh) vendor-advisory
- Wazuh v4.14.8 Release Notes patch release-notes
- VulnCheck Advisory: Wazuh 4.6.0 before 4.14.8 Authentication Bypass via Empty Password in update_user third-party-advisory