Medium severity · published Oct 13, 2026
CVE-2026-74030
Wazuh 3.9.0 before 4.14.8 Memory Exhaustion via SCA YAML Alias Expansion
4.9
CVSS
0.4%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H
Attack vector
Network
Complexity
Low
Privileges
High
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.4% · higher than 34% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
WA
wazuh-agent · Wazuh
3.9.0 before 4.14.8 · source: vendor
WA
wazuh-manager · Wazuh
3.9.0 before 4.14.8 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-74030
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-74030
vendor-advisory
https://github.com/wazuh/wazuh/security/advisories/GHSA-x8v7-g49q-ff7j
patch
https://github.com/wazuh/wazuh/releases/tag/v4.14.8
third-party-advisory
https://www.vulncheck.com/advisories/wazuh-3.9.0-before-4.14.8-memory-exhaustion-via-sca-yaml-alias-expansion
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