CVE-2026-112339

Wazuh 3.9.0 before 4.14.9 Missing TLS Hostname Verification in fluent-forward Module

8.2 High

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.

Attack profile

How easy it is to exploit

Attack vector: Network
Complexity: High
Privileges needed: None
User interaction: None

What an attacker can affect

Confidentiality: High
Integrity: None
Availability: None

Exploit likelihood

0.17%Scored on 2026-11-07. The trend appears after a second daily score.

What each source reports

CVE List Score used 8.2

Wazuh 3.9.0 before 4.14.9 Missing TLS Hostname Verification in fluent-forward Module

Record: CVE-2026-112339
CVSS 4.0: 8.2 HighCVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
CVSS 3.1: 5.9 MediumCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
Weakness: CWE-297
Updated: 2026-11-06

EUVDEUVD-2026-118282 8.2

Record: EUVD-2026-118282
CVSS 4.0: 8.2 HighCVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
Updated: 2026-11-06

NVD 8.2

Record: CVE-2026-112339
CVSS 4.0: 8.2 HighCVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
CVSS 3.1: 5.9 MediumCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
Weakness: CWE-297
Updated: 2026-11-06

OSV 8.2

Wazuh 3.9.0 before 4.14.9 Missing TLS Hostname Verification in fluent-forward Module

Record: CVE-2026-112339
CVSS 4.0: 8.2 HighCVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
Weakness: CWE-297
Updated: 2026-11-07

Affected products

wazuh

History

History
Recorded	Changed	Sources
Nov 7, 2026	aliases, references	NVD, OSV
Nov 6, 2026	cwes, references, severity, title	CVE List
Nov 6, 2026	first indexed	EUVD

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2026-112339 is a high vulnerability (CVSS 8.2) in Wazuh, published November 6, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.17%, the 6th percentile. No source names a fixed version.