{"id":"CVE-2026-74046","title":"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…","summary":"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…","severity":"medium","cvss":4.9,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H","cwe":["CWE-409"],"vendor":"wazuh","product":"wazuh","affected":["wazuh >= 4.4.0, < 4.14.7"],"patched":["wazuh 4.14.7"],"published":"2026-08-18","updated":"2026-09-16","sourceUpdated":"2026-09-16T20:24:56.137","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-74046","references":[{"url":"https://github.com/wazuh/wazuh/pull/37119","label":"disclosure@vulncheck.com"},{"url":"https://github.com/wazuh/wazuh/security/advisories/GHSA-mr7j-w2m4-vw5j","label":"disclosure@vulncheck.com"},{"url":"https://www.vulncheck.com/advisories/wazuh-dos-via-fdecompress-files-zip-bomb","label":"disclosure@vulncheck.com"},{"url":"https://github.com/wazuh/wazuh/security/advisories/GHSA-mr7j-w2m4-vw5j","label":"134c704f-9b21-4f2e-91b3-4a467353bcc0"}],"tags":["nvd"],"epss":0.00345,"epssPercentile":0.28078,"ingestedAt":"2026-09-08T21:11:12.282Z","slug":"CVE-2026-74046","body":"## Overview\n\nWazuh 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.\n\n## Affected\n\n- `wazuh >= 4.4.0, < 4.14.7`\n\n## Remediation\n\nUpgrade past the affected range:\n\n- `wazuh 4.14.7`","depth":"sunlit","depthScore":27,"depthScoreParts":{"impact":27,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}