{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-74046", "assignerOrgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10", "state": "PUBLISHED", "assignerShortName": "VulnCheck", "dateReserved": "2026-08-14T14:06:40.513Z", "datePublished": "2026-08-18T17:27:24.053Z", "dateUpdated": "2026-08-18T17:27:24.053Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10", "shortName": "VulnCheck", "dateUpdated": "2026-08-18T17:27:24.053Z"}, "title": "Wazuh 4.4.0 < 4.14.7 DoS via fdecompress_files() Zip Bomb", "descriptions": [{"lang": "en", "value": "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."}], "datePublic": "2026-08-18T00:00:00.000Z", "problemTypes": [{"descriptions": [{"lang": "en", "cweId": "CWE-409", "description": "Improper Handling of Highly Compressed Data (Data Amplification)", "type": "CWE"}]}], "affected": [{"vendor": "Wazuh", "product": "wazuh-manager", "repo": "https://github.com/wazuh/wazuh", "defaultStatus": "unaffected", "versions": [{"version": "4.4.0", "status": "affected", "versionType": "semver", "lessThan": "4.14.7"}]}], "metrics": [{"format": "CVSS", "scenarios": [{"lang": "en", "value": "GENERAL"}], "cvssV4_0": {"attackVector": "NETWORK", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "HIGH", "userInteraction": "NONE", "vulnConfidentialityImpact": "NONE", "subConfidentialityImpact": "NONE", "vulnIntegrityImpact": "NONE", "subIntegrityImpact": "NONE", "vulnAvailabilityImpact": "HIGH", "subAvailabilityImpact": "NONE", "exploitMaturity": "NOT_DEFINED", "Safety": "NOT_DEFINED", "Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "valueDensity": "NOT_DEFINED", "vulnerabilityResponseEffort": "NOT_DEFINED", "providerUrgency": "NOT_DEFINED", "version": "4.0", "baseSeverity": "MEDIUM", "baseScore": 6.9, "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N"}}, {"format": "CVSS", "scenarios": [{"lang": "en", "value": "GENERAL"}], "cvssV3_1": {"attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "HIGH", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "availabilityImpact": "HIGH", "version": "3.1", "baseSeverity": "MEDIUM", "baseScore": 4.9, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H"}}], "references": [{"url": "https://github.com/wazuh/wazuh/security/advisories/GHSA-mr7j-w2m4-vw5j", "name": "GitHub Security Advisory (GHSA-mr7j-w2m4-vw5j)", "tags": ["vendor-advisory"]}, {"url": "https://github.com/wazuh/wazuh/pull/37119", "name": "Pull Request", "tags": ["patch"]}, {"url": "https://www.vulncheck.com/advisories/wazuh-dos-via-fdecompress-files-zip-bomb", "tags": ["third-party-advisory"]}], "credits": [{"lang": "en", "value": "moltenbit", "type": "reporter"}, {"lang": "en", "value": "jotacarma90", "type": "analyst"}], "solutions": [{"lang": "en", "value": "Upgrade the affected package to 4.14.7 or later."}], "timeline": [{"time": "2026-05-19T00:00:00.000Z", "lang": "en", "value": "Reported to the Wazuh security team"}], "source": {"discovery": "EXTERNAL"}}}}

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