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.

Attack Vector Network

Attack Complexity Low

Privileges Required High

Attack Requirements None

User Interaction None

Vulnerable System Confidentiality Impact None

Vulnerable System Integrity Impact None

Vulnerable System Availability Impact High

Subsequent System Confidentiality Impact None

Subsequent System Integrity Impact None

Subsequent System Availability Impact None

Attack Vector Network

Attack Complexity Low

Privileges Required High

Scope Unchanged

Confidentiality Impact None

Integrity Impact None

Availability Impact High

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Exploitation none

Automatable no

Technical Impact partial

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
Wazuh wazuh-agent unaffected
Version Status Constraints
3.9.0 affected < 4.14.8
4.14.8 unaffected —
Wazuh wazuh-manager unaffected
Version Status Constraints
3.9.0 affected < 4.14.8
4.14.8 unaffected —

No data.

No data.

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Project Subscriptions

Vendors Products
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Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://github.com/wazuh/wazuh/releases/tag/v4.14.8 cve-icon cve-icon
https://github.com/wazuh/wazuh/security/advisories/GHSA-x8v7-g49q-ff7j cve-icon cve-icon
https://www.vulncheck.com/advisories/wazuh-3.9.0-before-4.14.8-memory-exhaustion-via-sca-yaml-alias-expansion cve-icon cve-icon
History

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'}

Projects

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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 : Received

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

Modified: 2026-10-13T17:17:45.260

Link: CVE-2026-74030

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-10-13T15:15:15Z

Weaknesses