# CVE-2026-74046

## Summary

- **CVE ID:** CVE-2026-74046
- **Severity:** MEDIUM
- **CVSS Score:** 6.9 (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)
- **CWE:** CWE-409
- **Published:** Aug 18, 2026
- **Last Modified:** Aug 18, 2026

## 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.

## Affected Products

- Wazuh — wazuh-manager (4.4.0)

## References

- [CNA](https://github.com/wazuh/wazuh/security/advisories/GHSA-mr7j-w2m4-vw5j)
- [CNA](https://github.com/wazuh/wazuh/pull/37119)
- [CNA](https://www.vulncheck.com/advisories/wazuh-dos-via-fdecompress-files-zip-bomb)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.38%
- **EPSS Percentile:** 31.7

---
_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-10._