Description
Wazuh from 3.9.0 before 4.14.9 contains a missing TLS hostname verification vulnerability in the fluent-forward module's wm_fluent_ssl_ctx() that allows network attackers to impersonate the Fluentd collector by presenting any certificate chaining to the configured ca_file. Attackers who redirect the connection via DNS, ARP, or on-path positions can receive forwarded security telemetry and the shared_key_hexdigest for offline cracking.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| wazuh | wazuh | 3.9.0 – < 4.14.9 | 4.14.9 |
Advisories 1
- WID-SEC-2026-4377 Wazuh: Mehrere Schwachstellen BSI CERT-Bund (WID) · Nov 8, 2026
References
- GitHub Security Advisory (GHSA-v8ww-qhjh-j6w9) vendor-advisory
- wazuh v4.14.9 Release Notes release-notes
- VulnCheck Advisory: Wazuh 3.9.0 before 4.14.9 Missing TLS Hostname Verification in fluent-forward Module third-party-advisory