{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "introduced": "4.4.0"
              },
              {
                "fixed": "4.14.6"
              },
              {
                "introduced": "5.0.0-beta1"
              },
              {
                "fixed": "5.0.0-beta2"
              }
            ],
            "source": [
              "AFFECTED_FIELD",
              "REFERENCES"
            ]
          },
          "events": [
            {
              "introduced": "2477e9fa50bc1424e834ac8401ce2450a5978e75"
            },
            {
              "introduced": "cddd833300cb5af494ba7dab31192bae649eb184"
            },
            {
              "fixed": "44c2925b46bd058d2426bd44ed1b3e5d7b7b03b4"
            },
            {
              "fixed": "b58b3b2552497639b1b2a2b23e8de87e4ce9cf02"
            },
            {
              "fixed": "cddf3fd16b0f945b28eb9c27714de3cc344e0926"
            }
          ],
          "repo": "https://github.com/wazuh/wazuh",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-c3m6-fp2h-wmr4"
  ],
  "database_specific": {
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
      "CWE-117"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/44xxx/CVE-2026-44256.json"
  },
  "details": "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.",
  "id": "CVE-2026-44256",
  "modified": "2026-09-11T03:30:26.434755158Z",
  "published": "2026-08-19T16:21:49.920Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/wazuh/wazuh/releases/tag/v4.14.6"
    },
    {
      "type": "WEB",
      "url": "https://github.com/wazuh/wazuh/releases/tag/v5.0.0-beta2"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/44xxx/CVE-2026-44256.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/wazuh/wazuh/security/advisories/GHSA-c3m6-fp2h-wmr4"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-44256"
    },
    {
      "type": "FIX",
      "url": "https://github.com/wazuh/wazuh/commit/cddf3fd16b0f945b28eb9c27714de3cc344e0926"
    },
    {
      "type": "FIX",
      "url": "https://github.com/wazuh/wazuh/pull/35866"
    }
  ],
  "schema_version": "1.9.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Wazuh: CRLF Log Injection via Unsanitized Basic-Auth Username"
}