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CVE-2026-74046 Details

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.

Metrics

CVSS 3.x Severity and Vector Strings:

CNA: [email protected]CVSS-B:4.9 MEDIUMVector:CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H

References to Advisories, Solutions, and Tools

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URL	Source(s)	Tag(s)
https://github.com/wazuh/wazuh/security/advisories/GHSA-mr7j-w2m4-vw5j	CISA-ADP	ExploitMitigationVendor Advisory
https://github.com/wazuh/wazuh/pull/37119	[email protected]	Issue TrackingPatch
https://github.com/wazuh/wazuh/security/advisories/GHSA-mr7j-w2m4-vw5j	[email protected]	ExploitMitigationVendor Advisory
https://www.vulncheck.com/advisories/wazuh-dos-via-fdecompress-files-zip-bomb	[email protected]	Third Party Advisory

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-409	Improper Handling of Highly Compressed Data (Data Amplification)	[email protected]

Affected Products

Product	Versions
wazuh wazuh	>= 4.4.0, < 4.14.7
CPE cpe:2.3:a:wazuh:wazuh:::::::: Remediation No remediation found in references.

Change History

3 change records found show changes

Date	Action	Recorded By
Sep 16, 2026	Initial Analysis	[email protected]
Aug 18, 2026	CVE Modified	CISA-ADP
Aug 18, 2026	New CVE Received	[email protected]