VULNERABILITY INTELLIGENCE

CVE-2026-74046

CVSS score4.9 MEDIUM

EPSS probability0.58%

CISA KEVNot currently listed

Published2026-08-18

Last modified2026-10-22

CVSS vectorCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H

Description

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.

Weakness classification

disclosure@vulncheck.com: CWE-409

Primary references

disclosure@vulncheck.com — Issue Tracking, Patch
disclosure@vulncheck.com — Exploit, Mitigation, Vendor Advisory
disclosure@vulncheck.com — Third Party Advisory
134c704f-9b21-4f2e-91b3-4a467353bcc0 — Exploit, Mitigation, Vendor Advisory