CVE-2026-44256mediumCWE-117

CVE-2026-44256: medium-severity vulnerability in wazuh

Wazuh: CRLF Log Injection via Unsanitized Basic-Auth Username

Published

Follow this CVE+ Monitor wazuh

E-mail alert when it lands in KEV, gets a public PoC or its score goes up.

13Vexday Risk Score

No sign of exploitation. No public exploitation artifact known so far.

ssvc Trackcvss 5.3epss 0.5%
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:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
Affected products
wazuh · wazuh
Related CVEs — wazuh

In the same product, most dangerous first.

CVE-2025-24016CRITICALRemote code execution in Wazuh serverEPSS 93.8%KEVCVE-2023-50260HIGHWazuh's vulnerability in host_deny AR script allows arbitrary command executionEPSS 41.2%CVE-2026-25769CRITICALWazuh Cluster vulnerable to Remote Code Execution via Insecure DeserializationEPSS 9.1%CVE-2024-32038CRITICALWazuh Analysis Engine Event Decoder Heap-based Buffer Overflow Remote Code Execution VulnerabilityEPSS 1.0%CVE-2026-25770CRITICALWazuh has Privilege Escalation to Root via Cluster Protocol File WriteEPSS 1.0%CVE-2026-61800CRITICALWazuh cluster worker file sync allows arbitrary file write under /var/ossec (incomplete fix for CVE-2026-30893)EPSS 1.0%