Vulnerability Details 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.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.003
EPSS Ranking 28.2%
CVSS Severity
CVSS v3 Score 4.9
References
Products affected by CVE-2026-74046
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cpe:2.3:a:wazuh:wazuh:4.10.0
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cpe:2.3:a:wazuh:wazuh:4.10.1
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cpe:2.3:a:wazuh:wazuh:4.10.2
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cpe:2.3:a:wazuh:wazuh:4.10.3
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cpe:2.3:a:wazuh:wazuh:4.10.4
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cpe:2.3:a:wazuh:wazuh:4.10.5
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cpe:2.3:a:wazuh:wazuh:4.11.0
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cpe:2.3:a:wazuh:wazuh:4.11.1
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cpe:2.3:a:wazuh:wazuh:4.11.2
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cpe:2.3:a:wazuh:wazuh:4.12.0
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cpe:2.3:a:wazuh:wazuh:4.13.0
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cpe:2.3:a:wazuh:wazuh:4.13.1
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cpe:2.3:a:wazuh:wazuh:4.14.0
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cpe:2.3:a:wazuh:wazuh:4.14.1
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cpe:2.3:a:wazuh:wazuh:4.14.2
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cpe:2.3:a:wazuh:wazuh:4.14.3
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cpe:2.3:a:wazuh:wazuh:4.14.4
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cpe:2.3:a:wazuh:wazuh:4.14.5
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cpe:2.3:a:wazuh:wazuh:4.14.6
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cpe:2.3:a:wazuh:wazuh:4.4.0
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cpe:2.3:a:wazuh:wazuh:4.4.1
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cpe:2.3:a:wazuh:wazuh:4.4.2
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cpe:2.3:a:wazuh:wazuh:4.4.3
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cpe:2.3:a:wazuh:wazuh:4.4.4
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cpe:2.3:a:wazuh:wazuh:4.4.5
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cpe:2.3:a:wazuh:wazuh:4.5.0
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cpe:2.3:a:wazuh:wazuh:4.5.1
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cpe:2.3:a:wazuh:wazuh:4.5.2
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cpe:2.3:a:wazuh:wazuh:4.5.3
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cpe:2.3:a:wazuh:wazuh:4.5.4
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cpe:2.3:a:wazuh:wazuh:4.6.0
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cpe:2.3:a:wazuh:wazuh:4.7.0
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cpe:2.3:a:wazuh:wazuh:4.7.1
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cpe:2.3:a:wazuh:wazuh:4.7.2
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cpe:2.3:a:wazuh:wazuh:4.7.3
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cpe:2.3:a:wazuh:wazuh:4.7.4
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cpe:2.3:a:wazuh:wazuh:4.7.5
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cpe:2.3:a:wazuh:wazuh:4.8.0
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cpe:2.3:a:wazuh:wazuh:4.8.1
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cpe:2.3:a:wazuh:wazuh:4.8.2
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cpe:2.3:a:wazuh:wazuh:4.9.0
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cpe:2.3:a:wazuh:wazuh:4.9.1
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cpe:2.3:a:wazuh:wazuh:4.9.2