Vulnerability in wazuh-agent

[ Description ]Official 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.

[ Fixes ]Fixes and patches

No fix or interim patch is linked from our sources yet. Check the vendor references below and limit exposure of affected systems until a fix is available.

[ Advisories ]Government CERT advisories

• BSI CERT-Bund12 Oct 2026WID-SEC-2026-3878

  Wazuh: Multiple vulnerabilities Translated from German

  CVE-2026-74034CVE-2026-74045CVE-2026-74035+12 more CVEs

[ References ]References

• github.com/wazuh/wazuh/releases/tag/v4.14.8
• github.com/wazuh/wazuh/security/advisories/GHSA-x8v7-g49q-ff7j
• www.vulncheck.com/advisories/wazuh-3.9.0-before-4.14.8-memory-exhaustion-via-sca-yaml-a…