CVE-2026-44256Wazuh: CRLF Log Injection via Unsanitized Basic-Auth Username
Updated under an hour ago ()
Does this affect you?
It affects wazuh. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
Do this next
Free account, 1 product
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.
- CVSS
- 5.3 MEDIUM (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
- Weakness (CWE)
- CWE-117
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- GitHub_M
- NVD analysis
- Analyzed
- Record last updated
- Aug 19, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
wazuh wazuh wazuh:wazuh (from the name) | from 4.4.0, < 4.14.6; from 5.0.0-beta1, < 5.0.0-beta2 | CNA record |
wazuh wazuh wazuh:wazuh | from 4.4.0 before 4.14.6; 5.0.0 | NVD |
References
- https://github.com/wazuh/wazuh/security/advisories/GHSA-c3m6-fp2h-wmr4x-refsource-confirm, exploit, vendor-advisory
- https://github.com/wazuh/wazuh/pull/35866x-refsource-misc, issue-tracking, patch
- https://github.com/wazuh/wazuh/commit/cddf3fd16b0f945b28eb9c27714de3cc344e0926x-refsource-misc, patch
- https://github.com/wazuh/wazuh/releases/tag/v4.14.6x-refsource-misc, release-notes
- https://github.com/wazuh/wazuh/releases/tag/v5.0.0-beta2x-refsource-misc, release-notes
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.