CVE-2026-74030

Medium

Description

Wazuh from 3.9.0 before 4.14.8 contains an uncontrolled YAML alias expansion vulnerability in yaml2json_node that allows a manager-controlled policy to exhaust agent memory. Attackers controlling the manager can push a small SCA policy with nested aliases via merged.mg to OOM-kill wazuh-modulesd on every agent in a group.

SeverityMedium

CVSS4.9

Exploit probability—

ProductWazuh-agent

PublishedOct 13, 2026

First seenOct 13, 2026

Weakness typeCWE-776CWE-776

How to fix

Update

Wazuh wazuh-agent4.14.8 or later
Wazuh wazuh-manager4.14.8 or later

Patches

github.com/wazuh/wazuh/releases/tag/v4.14.8

Vendor advisories

github.com/wazuh/wazuh/security/advisories/GHSA-x8v7-g49q-ff7j

Affected products

Product	Affected versions	Fixed in
Wazuh wazuh-agent	3.9.0 ≤ v < 4.14.8	4.14.8
Wazuh wazuh-manager	3.9.0 ≤ v < 4.14.8	4.14.8

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