Vulnerability DatabaseCVE-2026-74030
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CVE-2026-74030
Published:October 13, 2026
Updated:October 15, 2026
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.
Affected Packages
https://github.com/wazuh/wazuh.git (GITHUB):
Affected version(s) >=v4.14.0 <v4.14.8
Fix Suggestion:
Update to version v4.14.8
Related Resources (6)
https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/74xxx/CVE-2026-74030.json
https://github.com/wazuh/wazuh
https://nvd.nist.gov/vuln/detail/CVE-2026-74030
https://github.com/wazuh/wazuh/releases/tag/v4.14.8
https://github.com/wazuh/wazuh/security/advisories/GHSA-x8v7-g49q-ff7j
https://www.vulncheck.com/advisories/wazuh-3.9.0-before-4.14.8-memory-exhaustion-via-sca-yaml-alias-expansion
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CVSS v4
Base Score:
6.9
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
HIGH
User Interaction
NONE
Vulnerable System Confidentiality
NONE
Vulnerable System Integrity
NONE
Vulnerable System Availability
HIGH
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
4.9
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
HIGH
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Weakness Type (CWE)
Improper Restriction of Recursive Entity References in DTDs ('XML Entity Expansion')
CWE-776
EPSS
Base Score:
0.40