---
id: CVE-2026-112339
title: >-
  Wazuh 3.9.0 before 4.14.9 Missing TLS Hostname Verification in fluent-forward
  Module
summary: >-
  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…
severity: medium
cvss: 5.9
cvssVector: 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N'
cvssSource: cna
cwe:
  - CWE-297
vendor: wazuh
product: wazuh
affected:
  - wazuh >= 3.9.0 < 4.14.9
published: '2026-11-06'
updated: '2026-11-06'
sourceUpdated: '2026-11-06T15:00:45.884Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-112339'
references:
  - url: 'https://github.com/wazuh/wazuh/security/advisories/GHSA-v8ww-qhjh-j6w9'
    label: GitHub Security Advisory (GHSA-v8ww-qhjh-j6w9)
  - url: 'https://github.com/wazuh/wazuh/releases/tag/v4.14.9'
    label: wazuh v4.14.9 Release Notes
  - url: >-
      https://www.vulncheck.com/advisories/wazuh-3.9.0-before-4.14.9-missing-tls-hostname-verification-in-fluent-forward-module
    label: >-
      VulnCheck Advisory: Wazuh 3.9.0 before 4.14.9 Missing TLS Hostname
      Verification in fluent-forward Module
tags:
  - cve.org
ingestedAt: '2026-11-06T15:54:04.084Z'
epss: 0.00169
epssPercentile: 0.0631
---

## Overview

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

- `wazuh >= 3.9.0 < 4.14.9`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.