Medium 4.9Published Oct 13, 2026

CVE-2026-74030Wazuh 3.9.0 before 4.14.8 Memory Exhaustion via SCA YAML Alias Expansion

Updated under an hour ago (2026-10-19 06:30 UTC)

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It affects wazuh-agent and 1 other product. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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Exploited in the last 30 days

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.

CVSS: 4.9 MEDIUM (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H
Weakness (CWE): CWE-776
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: VulnCheck
NVD analysis: Awaiting Analysis
Record last updated: Oct 13, 2026
First seen by InfoSec Signals: Oct 13, 2026

Affected products

Affected products

Wazuh wazuh-agent wazuh:agent (from the name)	from 3.9.0 before 4.14.8; 4.14.8 not affected	CNA record
Wazuh wazuh-manager wazuh:manager (from the name)	from 3.9.0 before 4.14.8; 4.14.8 not affected	CNA record

References

https://github.com/wazuh/wazuh/security/advisories/GHSA-x8v7-g49q-ff7jvendor-advisory
https://github.com/wazuh/wazuh/releases/tag/v4.14.8patch, release-notes
https://www.vulncheck.com/advisories/wazuh-3.9.0-before-4.14.8-memory-exhaustion-via-sca-yaml-alias-expansionthird-party-advisory

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.