Vulnerability Analysis
Wazuh: CRLF Log Injection via Unsanitized Basic-Auth Username
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.
No Active Exploit Signals
CVSS Base Score
5.3
MEDIUM
Exploitability:3.9
Impact Score:1.5
Temporal Score:-
EPSS:-
Threat Intelligence Signals
CISA KEV
No
KEV Date Added
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Ransomware Use
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KEV Due Date
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VulnCheck In-the-Wild
No
Nuclei Template
No
EPSS Score
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EPSS Percentile
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GHSA ID
—
GitHub Severity
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SSVC Exploitation
None
SSVC Automatable
Yes
Vulnerability Class
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Identity & Timeline
| Status | - |
| Assigning Authority | - |
| CVSS Version / Source | - |
| Reserved | - |
| Published | - |
| Patch Date (date_public) | - |
| Exploit DB Date | - |
| First GitHub PoC Date | - |
| Last Updated | - |
| Time to Patch (Days to fix) | - |
| Exploit Release Gap | - |
| PoC Release Gap | - |
| Exploit DB References | None identified |
Affected Products & Versions
| Vendor | Product | Affected Versions |
|---|---|---|
| No affected products specified. | ||
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