Reference page — cumulative record through Saturday, October 3, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.

CVE-2026-74046

CVE-2026-74046MEDIUM

Wazuh 4.4.0 < 4.14.7 DoS via fdecompress_files() Zip Bomb

  AV  AC  AT  PR  UI  VC  VI  VA   CVSS    EPSS   %ile   KEV
   N   L   N   H   N   N   N   H    6.9   .0058   45.8     —

AFFECTED
  Product        Versions  Fixed
  wazuh-manager  4.4.0 –   —

TIMELINE
  Aug 14  Reserved by VulnCheck
  Aug 18  Published (CNA: VulnCheck)
  Sep 16  EXPLOIT PUBLISHED — CVE-2026-74046 (wazuh-manager). Public exploit reference added.
  Oct 1   EXPLOIT PUBLISHED — CVE-2026-74046 (wazuh-manager). Public exploit reference added.

CWE-409 · CNA: VulnCheck · CVSS v4.0 · 3 references · NVD status: Analyzed

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.

Lifecycle

Complete event history — 4 events, chronological
Date	Event	Detail
August 14, 2026	Reserved	Reserved by VulnCheck
August 18, 2026	Published	Published (CNA: VulnCheck)
September 16, 2026	EXPLOIT PUBLISHED	EXPLOIT PUBLISHED — CVE-2026-74046 (wazuh-manager). Public exploit reference added.
October 1, 2026	EXPLOIT PUBLISHED	EXPLOIT PUBLISHED — CVE-2026-74046 (wazuh-manager). Public exploit reference added.

Affected

Affected products and packages — 1 row
Vendor	Product / Package	Ecosystem	Version introduced	Fixed
Wazuh	wazuh-manager	—	4.4.0	—

Weaknesses

CWE-409

References (3)

https://github.com/wazuh/wazuh/pull/37119 [Issue Tracking, Patch]
https://github.com/wazuh/wazuh/security/advisories/GHSA-mr7j-w2m4-vw5j [Exploit, Mitigation, Vendor Advisory]
https://www.vulncheck.com/advisories/wazuh-dos-via-fdecompress-files-zip-bomb [Third Party Advisory]

Authoritative record: CVE-2026-74046 at cve.org

Vendors: wazuh

Weaknesses: CWE-409

About this page

This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2026-74046 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Saturday, October 3, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.