CVE-2026-74046

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.

• CWE-409

• https://github.com/wazuh/wazuh/pull/37119Issue Tracking, Patch
• https://github.com/wazuh/wazuh/security/advisories/GHSA-mr7j-w2m4-vw5jExploit, Mitigation, Vendor Advisory
• https://www.vulncheck.com/advisories/wazuh-dos-via-fdecompress-files-zip-bombThird Party Advisory
• https://github.com/wazuh/wazuh/security/advisories/GHSA-mr7j-w2m4-vw5jExploit, Mitigation, Vendor Advisory

Published

Aug 18, 2026

Last Modified

Oct 22, 2026

Status

Analyzed

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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