CVE-2026-44256

Wazuh is a free and open source platform used for threat prevention, detection, and response. From 4.4.0 until 4.14.6 and 5.0.0-beta2, api/api/middlewares.py decodes the Basic authentication username before credential validation and passes it to the access logger without neutralizing control characters. api/api/alogging.py interpolates that value into the plain-text API log. An unauthenticated attacker can include carriage returns or line feeds in the username to forge entries, obscure activity, or poison systems that consume the plain-text audit log. The JSON log format is not affected because JSON serialization escapes these characters. This issue is fixed in versions 4.14.6 and 5.0.0-beta2.

• CWE-117

• https://github.com/wazuh/wazuh/commit/cddf3fd16b0f945b28eb9c27714de3cc344e0926Patch
• https://github.com/wazuh/wazuh/pull/35866Issue Tracking, Patch
• https://github.com/wazuh/wazuh/releases/tag/v4.14.6Release Notes
• https://github.com/wazuh/wazuh/releases/tag/v5.0.0-beta2Release Notes
• https://github.com/wazuh/wazuh/security/advisories/GHSA-c3m6-fp2h-wmr4Exploit, Vendor Advisory

Published

Aug 19, 2026

Last Modified

Sep 18, 2026

Status

Analyzed

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
• Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
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