CVE-2026-74046: Wazuh

Medium severity, CVSS 4.9. EPSS: 0.6% chance of exploitation in the next 30 days.

Wazuh 4.4.0 before 4.14.7 contains a denial of service vulnerability in the fdecompress_files() function within cluster.py that allows authenticated cluster peers to exhaust memory by supplying a malicious synchronization archive without decompressed size limits. Attackers holding a valid cluster Fernet key can upload a small, highly compressed zip bomb archive that forces wazuh-clusterd on the master node to decompress the full payload into memory, causing memory exhaustion and service disruption.

Affected products

• Wazuh Wazuh: from 4.4.0, before 4.14.7 (fixed in 4.14.7)

Published 2026-08-18. Last modified 2026-10-01.