{"id":"CVE-2026-74046","summary":"Wazuh 4.4.0 \u003c 4.14.7 DoS via fdecompress_files() Zip Bomb","details":"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.","aliases":["GHSA-mr7j-w2m4-vw5j"],"modified":"2026-08-20T03:55:13.435660319Z","published":"2026-08-18T17:27:24.053Z","database_specific":{"cwe_ids":["CWE-409"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/74xxx/CVE-2026-74046.json","cna_assigner":"VulnCheck"},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/74xxx/CVE-2026-74046.json"},{"type":"ADVISORY","url":"https://github.com/wazuh/wazuh/security/advisories/GHSA-mr7j-w2m4-vw5j"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-74046"},{"type":"ADVISORY","url":"https://www.vulncheck.com/advisories/wazuh-dos-via-fdecompress-files-zip-bomb"},{"type":"FIX","url":"https://github.com/wazuh/wazuh/pull/37119"},{"type":"PACKAGE","url":"https://github.com/wazuh/wazuh"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/wazuh/wazuh","events":[{"introduced":"2477e9fa50bc1424e834ac8401ce2450a5978e75"},{"fixed":"a42268a27c555d9348d5598fb8751eaf4c8e9024"}],"database_specific":{"extracted_events":[{"introduced":"4.4.0"},{"fixed":"4.14.7"}],"source":["AFFECTED_FIELD","DESCRIPTION"]}}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-74046.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V4","score":"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"}]}