{"id":"CVE-2026-44256","title":"Wazuh is a free and open source platform used for threat prevention, detection, and response","summary":"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 pass…","severity":"medium","cvss":5.3,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N","cwe":["CWE-117"],"vendor":"wazuh","product":"wazuh","affected":["wazuh >= 4.4.0, < 4.14.6","wazuh = 5.0.0"],"patched":["wazuh 4.14.6"],"published":"2026-08-19","updated":"2026-09-18","sourceUpdated":"2026-09-18T14:52:06.480","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-44256","references":[{"url":"https://github.com/wazuh/wazuh/commit/cddf3fd16b0f945b28eb9c27714de3cc344e0926","label":"security-advisories@github.com"},{"url":"https://github.com/wazuh/wazuh/pull/35866","label":"security-advisories@github.com"},{"url":"https://github.com/wazuh/wazuh/releases/tag/v4.14.6","label":"security-advisories@github.com"},{"url":"https://github.com/wazuh/wazuh/releases/tag/v5.0.0-beta2","label":"security-advisories@github.com"},{"url":"https://github.com/wazuh/wazuh/security/advisories/GHSA-c3m6-fp2h-wmr4","label":"security-advisories@github.com"}],"tags":["nvd","cve.org"],"epss":0.00314,"epssPercentile":0.2446,"ssvc":{"exploitation":"none","automatable":"yes","technicalImpact":"partial","timestamp":"2026-08-19T18:17:23.310124Z"},"ingestedAt":"2026-09-14T14:17:11.409Z","slug":"CVE-2026-44256","body":"## Overview\n\nWazuh 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.\n\n## Affected\n\n- `wazuh >= 4.4.0, < 4.14.6`\n- `wazuh = 5.0.0`\n\n## Remediation\n\nUpgrade past the affected range:\n\n- `wazuh 4.14.6`","depth":"sunlit","depthScore":29,"depthScoreParts":{"impact":29.2,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}