CVE-2026-112339
Wazuh 3.9.0 before 4.14.9 Missing TLS Hostname Verification in fluent-forward Module
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.
Fixes and workarounds
No remediation reported in collected sources.
Missing remediation information is not evidence that no patch exists.
Affected products and versions
| Product | Versions | Authority |
|---|---|---|
| wazuh wazuh wazuh/wazuh
github |
≥ 3.9.0; < 4.14.9 (affected, semver) 4.14.9 (unaffected, semver) Other versions: unaffected |
CNA: VulnCheck |
wazuh-agentwazuh-agent
|
>= 3.9.0 (affected, GitHub advisory range) | GitHub GHSA-v8ww-qhjh-j6w9 |
wazuh-managerwazuh-manager
|
>= 3.9.0 (affected, GitHub advisory range) | GitHub GHSA-v8ww-qhjh-j6w9 |
Version ranges are source assertions. Check the vendor advisory and your installed configuration before determining exposure.
CVSS assessments
| Version / score | Vector | Authority |
|---|---|---|
| 4.0 / 8.2 high |
CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N | CNA: VulnCheck |
| 3.1 / 5.9 medium |
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N | CNA: VulnCheck |
| 4.0 / 8.2 high |
CVSS: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 | NVD: [email protected] |
| 3.1 / 5.9 medium |
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N | NVD: [email protected] |
Exploit evidence
- https://github.com/wazuh/wazuh/security/advisories/GHSA-v8ww-qhjh-j6w9
exploit · ADP: CISA-ADP
References
- https://github.com/wazuh/wazuh/security/advisories/GHSA-v8ww-qhjh-j6w9CNA: VulnCheck · vendor-advisory
- https://github.com/wazuh/wazuh/releases/tag/v4.14.9CNA: VulnCheck · release-notes
- https://www.vulncheck.com/advisories/wazuh-3.9.0-before-4.14.9-missing-tls-hostname-verification-in-fluent-forward-moduleCNA: VulnCheck · third-party-advisory
- https://github.com/wazuh/wazuh/security/advisories/GHSA-v8ww-qhjh-j6w9ADP: CISA-ADP · exploit
- https://github.com/wazuh/wazuh/releases/tag/v4.14.9[email protected]
- https://github.com/wazuh/wazuh/security/advisories/GHSA-v8ww-qhjh-j6w9[email protected]
- https://www.vulncheck.com/advisories/wazuh-3.9.0-before-4.14.9-missing-tls-hostname-verification-in-fluent-forward-module[email protected]
- https://github.com/wazuh/wazuh/security/advisories/GHSA-v8ww-qhjh-j6w9GitHub Security Advisories · advisory
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