All vulnerabilities
CVE-2026-74030GHSA-x8v7-g49q-ff7j

wazuh-agent: Wazuh 3.9.0 before 4.14.8 Memory Exhaustion via SCA YAML Alias Expansion

Wazuh wazuh-agent
Open in ThreatlineRecord JSON
CVSS
6.9Medium
ExploitationNo known exploitationNot in CISA KEV, which does not prove it is unexploitedCISA KEV
Exploit odds (EPSS)0.40%Chance of exploitation activity in the next 30 days, higher than 33% of CVEs. Scored 23 Oct 2026FIRST EPSS
Fixed in4.14.8Fixed versionCVE List
Published13 Oct 2026Updated 13 Oct 2026CVE List

What fixes it

A fixed version on one release line is not the upgrade target for every line. Check your exact version and any vendor backports.

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.

Text from CVE List

Affected versions 6

  • wazuh-agentaffected: 3.9.0 before 4.14.8CVE List
  • wazuh-agentunaffected: 4.14.8CVE List
  • wazuh-manageraffected: 3.9.0 before 4.14.8CVE List
  • wazuh-managerunaffected: 4.14.8CVE List
  • wazuh-agent>= 3.9.0GitHub
  • wazuh-manager>= 3.9.0GitHub

References 3