Wazuh up to 4.14.7 Cluster filename path traversal

Summaryinfo

A vulnerability described as very critical has been identified in Wazuh up to 4.14.7. The impacted element is the function upload_list_file/upload_rule_file/upload_decoder_file of the component Cluster. Executing a manipulation of the argument filename can lead to path traversal. This vulnerability appears as CVE-2026-74043. The attack may be performed from remote. There is no available exploit. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability was found in Wazuh up to 4.14.7. It has been declared as very critical. This vulnerability affects the function upload_list_file/upload_rule_file/upload_decoder_file of the component Cluster. The manipulation of the argument filename with an unknown input leads to a path traversal vulnerability. The CWE definition for the vulnerability is CWE-22. The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

Wazuh from 4.1.1 before 4.14.8 contains a path traversal vulnerability in upload_list_file, upload_rule_file, and upload_decoder_file that allows malicious cluster workers to write files at arbitrary paths. Attackers holding the cluster key can send DistributedAPI requests with ../ sequences in filename, bypassing REST controller validation, to write files as the wazuh user.

The advisory is shared for download at github.com. This vulnerability was named CVE-2026-74043 since 08/14/2026. The exploitation appears to be easy. The attack can be initiated remotely. Additional levels of successful authentication are necessary for exploitation. There are known technical details, but no exploit is available. The current price for an exploit might be approx. USD $0-$5k (estimation calculated on 10/13/2026). The MITRE ATT&CK project declares the attack technique as T1006.

Upgrading to version 4.14.8 eliminates this vulnerability.

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Productinfo

Name

• Wazuh

Version

• 4.14.0
• 4.14.1
• 4.14.2
• 4.14.3
• 4.14.4
• 4.14.5
• 4.14.6
• 4.14.7

Website

• Product: https://github.com/wazuh/wazuh/

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