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

Quick assessment

Affected
Wazuh wazuh-manager
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Wazuh是美国Wazuh公司开源的一款安全检测与威胁分析平台。 Wazuh 4.4.0版本至4.14.7之前版本存在资源管理错误漏洞，该漏洞源于cluster.py中的fdecompress_files()函数未限制解压大小，经过身份验证的集群对等节点可通过提供恶意同步归档文件耗尽内存，导致拒绝服务。

CVSS 4.9 · Medium EPSS 0.32% · P24

Possible ATT&CK Techniques 1 AI

T1496 · Resource Hijacking

Affected Version Matrix 1

VendorProduct Version RangeStatus
Wazuh wazuh-manager 4.4.0< 4.14.7 affected
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I. Basic Information for CVE-2026-74046

Vulnerability Information
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Vulnerability Title
Wazuh 4.4.0 < 4.14.7 DoS via fdecompress_files() Zip Bomb
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
对高度压缩数据的处理不恰当(数据放大攻击)
Source: CVE Program / CVE List V5
Vulnerability Title
Wazuh 资源管理错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Wazuh是美国Wazuh公司开源的一款安全检测与威胁分析平台。 Wazuh 4.4.0版本至4.14.7之前版本存在资源管理错误漏洞，该漏洞源于cluster.py中的fdecompress_files()函数未限制解压大小，经过身份验证的集群对等节点可通过提供恶意同步归档文件耗尽内存，导致拒绝服务。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Wazuh wazuh-manager 4.4.0 ~ 4.14.7 -

II. Public POCs for CVE-2026-74046

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III. Intelligence Information for CVE-2026-74046

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Patches & Fixes for CVE-2026-74046 (1)

Vendor Advisories for CVE-2026-74046 (2)

Same Patch Batch · Wazuh · 2026-08-18 · 4 CVEs total

CVE-2026-74038 7.1 HIGH Wazuh 4.0.0 < 4.14.6 Path Traversal DoS via Agent Enrollment
CVE-2026-74044 6.5 MEDIUM Wazuh 4.0.0 < 4.14.6 Path Traversal Arbitrary Directory Deletion via Cluster Hello
CVE-2026-74039 6.5 MEDIUM Wazuh 4.0.0 < 4.14.7 API DoS via Deeply Nested JSON auth_context

IV. Related Vulnerabilities

Same product: wazuh-manager
Same vendor: Wazuh
Same weakness: CWE-409

V. Comments for CVE-2026-74046

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