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.
Published: 2026-10-13
Score: 6.9 Medium
EPSS: n/a
KEV: No
Impact: n/a
Action: n/a
AI Analysis

Analysis and contextual insights are available on OpenCVE Cloud.

Remediation

No vendor fix or workaround currently provided.

Additional remediation guidance may be available on OpenCVE Cloud.

Tracking

Sign in to view the affected projects.

Advisories

No advisories yet.

History

Tue, 13 Oct 2026 20:30:00 +0000

Type Values Removed Values Added
First Time appeared Wazuh wazuh-agent
Wazuh wazuh-manager
Vendors & Products Wazuh wazuh-agent
Wazuh wazuh-manager

Tue, 13 Oct 2026 17:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Tue, 13 Oct 2026 13:45:00 +0000

Type Values Removed Values Added
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.
Title Wazuh 3.9.0 before 4.14.8 Memory Exhaustion via SCA YAML Alias Expansion
First Time appeared Wazuh
Wazuh wazuh
Weaknesses CWE-776
CPEs cpe:2.3:a:wazuh:wazuh:*:*:*:*:*:*:*:*
Vendors & Products Wazuh
Wazuh wazuh
References
Metrics cvssV3_1

{'score': 4.9, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H'}

cvssV4_0

{'score': 6.9, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N'}


Subscriptions

Wazuh Wazuh Wazuh-agent Wazuh-manager
cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published:

Updated: 2026-10-13T16:43:37.400Z

Reserved: 2026-08-14T14:06:40.511Z

Link: CVE-2026-74030

cve-icon Vulnrichment

Updated: 2026-10-13T15:47:52.791Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-10-13T14:17:39.470

Modified: 2026-10-13T20:39:48.767

Link: CVE-2026-74030

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-10-13T20:15:14Z

Weaknesses
  • CWE-776

    Improper Restriction of Recursive Entity References in DTDs ('XML Entity Expansion')