Medium 4.9Published Aug 18, 2026

CVE-2026-74046Wazuh 4.4.0 < 4.14.7 DoS via fdecompress_files() Zip Bomb

Updated under an hour ago (2026-10-19 06:30 UTC)

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Exploited in the last 30 days

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.

CVSS: 4.9 MEDIUM (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H
Weakness (CWE): CWE-409
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: VulnCheck
NVD analysis: Analyzed
Record last updated: Oct 1, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

Wazuh wazuh-manager wazuh:manager (from the name)	from 4.4.0 before 4.14.7	CNA record
wazuh wazuh wazuh:wazuh	from 4.4.0 before 4.14.7	NVD

References

https://github.com/wazuh/wazuh/security/advisories/GHSA-mr7j-w2m4-vw5jvendor-advisory, exploit, mitigation
https://github.com/wazuh/wazuh/pull/37119patch, issue-tracking
https://www.vulncheck.com/advisories/wazuh-dos-via-fdecompress-files-zip-bombthird-party-advisory

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.