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.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Wazuh | Wazuh | >= 4.4.0, < 4.14.7 |
Related Weaknesses (CWE)
References
- https://github.com/wazuh/wazuh/pull/37119Issue TrackingPatch
- https://github.com/wazuh/wazuh/security/advisories/GHSA-mr7j-w2m4-vw5jExploitMitigationVendor Advisory
- https://www.vulncheck.com/advisories/wazuh-dos-via-fdecompress-files-zip-bombThird Party Advisory
- https://github.com/wazuh/wazuh/security/advisories/GHSA-mr7j-w2m4-vw5jExploitMitigationVendor Advisory
FAQ
What is CVE-2026-74046?
CVE-2026-74046 is a vulnerability with a CVSS score of 4.9 (MEDIUM). 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 mali...
How severe is CVE-2026-74046?
CVE-2026-74046 has been rated MEDIUM with a CVSS base score of 4.9/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-74046?
Check the references section above for vendor advisories and patch information. Affected products include: Wazuh Wazuh.