# CVE-2026-44256

## Summary

- **CVE ID:** CVE-2026-44256
- **Severity:** MEDIUM
- **CVSS Score:** 5.3 (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N)
- **CWE:** CWE-117
- **Published:** Aug 19, 2026
- **Last Modified:** Aug 19, 2026

## Description

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.

## Affected Products

- wazuh — wazuh (>= 4.4.0, < 4.14.6)
- wazuh — wazuh (>= 5.0.0-beta1, < 5.0.0-beta2)

## References

- [CNA](https://github.com/wazuh/wazuh/security/advisories/GHSA-c3m6-fp2h-wmr4)
- [CNA](https://github.com/wazuh/wazuh/pull/35866)
- [CNA](https://github.com/wazuh/wazuh/commit/cddf3fd16b0f945b28eb9c27714de3cc344e0926)
- [CNA](https://github.com/wazuh/wazuh/releases/tag/v4.14.6)
- [CNA](https://github.com/wazuh/wazuh/releases/tag/v5.0.0-beta2)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.29%
- **EPSS Percentile:** 21.1

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