CVE-2026-74030
Wazuh 3.9.0 before 4.14.8 Memory Exhaustion via SCA YAML Alias Expansion
- State
- Published
- Severity
- 6.9 Medium
- Published
- Oct 13, 2026
- Updated
- Oct 13, 2026
- Reserved
- Aug 14, 2026
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 6.9 Medium | 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 | VulnCheck |
| 3.1 | 4.9 Medium | CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H | VulnCheck |
Weaknesses
- CWE-776 Improper Restriction of Recursive Entity References in DTDs ('XML Entity Expansion')
Affected Products
| Product | Versions |
|---|---|
wazuh-agentWazuh |
|
wazuh-managerWazuh |
|
References
- GitHub Security Advisory (GHSA-x8v7-g49q-ff7j)vendor-advisory
- Wazuh v4.14.8 Release Notespatchrelease-notes
- VulnCheck Advisory: Wazuh 3.9.0 before 4.14.8 Memory Exhaustion via SCA YAML Alias Expansionthird-party-advisory
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