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
References5
- github.com/wazuh/wazuh/security/advisories/GHSA-c3m6-fp2h-wmr4 ExploitVendor Advisory
- github.com/wazuh/wazuh/commit/cddf3fd16b0f945b28eb9c27714de3cc3… Patch
- github.com/wazuh/wazuh/pull/35866 Issue TrackingPatch
- github.com/wazuh/wazuh/releases/tag/v4.14.6 Release Notes
- github.com/wazuh/wazuh/releases/tag/v5.0.0-beta2 Release Notes
Metrics
- CVSS 3.1
-
5.3
MEDIUM
Score source: CNA
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N - EPSS — exploit probability
- 0% percentile: 42 · as of 10 November 2026
- CWE
- CWE-117
Could this be exploited in your environment?
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