Is CVE-2026-74046 being exploited?

No public exploit is currently tracked.

How severe is CVE-2026-74046?

CVE-2026-74046 has a CVSS v3 severity of MEDIUM (4.9).

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CVE-2026-74046

Description

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.