CVE-2026-44024

{
  "id": "CVE-2026-44024",
  "sourceIdentifier": "[email protected]",
  "published": "2026-07-08T22:17:14.337",
  "lastModified": "2026-10-25T17:10:00.197",
  "vulnStatus": "Analyzed",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Fluentd collects events from various data sources and writes them to files, RDBMS, NoSQL, IaaS, SaaS, Hadoop and so on. Prior to 1.19.3, Fluentd allows dynamically constructing file paths using the ${tag} placeholder, and insufficient validation of ${tag} in file configurations such as the path parameter of the out_file plugin allows attackers sending untrusted tags containing path traversal characters to write or overwrite arbitrary files and potentially achieve remote code execution. This issue is fixed in version 1.19.3."
    },
    {
      "lang": "es",
      "value": "Fluentd recopila eventos de varias fuentes de datos y los escribe en archivos, RDBMS, NoSQL, IaaS, SaaS, Hadoop, etc. Antes de la versión 1.19.3, Fluentd permite la construcción dinámica de rutas de archivo utilizando el marcador de posición ${tag}, y la validación insuficiente de ${tag} en configuraciones de archivo, como el parámetro path del plugin out_file, permite a los atacantes que envían etiquetas no confiables que contienen caracteres de salto de ruta escribir o sobrescribir archivos arbitrarios y potencialmente lograr la ejecución remota de código. Este problema está solucionado en la versión 1.19.3."
    }
  ],
  "affected": [
    {
      "source": "[email protected]",
      "affectedData": [
        {
          "vendor": "fluent",
          "product": "fluentd",
          "versions": [
            {
              "version": "< 1.19.3",
              "status": "affected"
            }
          ]
        }
      ]
    }
  ],
  "metrics": {
    "cvssMetricV31": [
      {
        "source": "[email protected]",
        "type": "Secondary",
        "cvssData": {
          "version": "3.1",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
          "baseScore": 9.8,
          "baseSeverity": "CRITICAL",
          "attackVector": "NETWORK",
          "attackComplexity": "LOW",
          "privilegesRequired": "NONE",
          "userInteraction": "NONE",
          "scope": "UNCHANGED",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "availabilityImpact": "HIGH"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 5.9
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "timestamp": "2026-07-09T00:00:00+00:00",
          "id": "CVE-2026-44024",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "yes"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "role": "CISA Coordinator",
          "version": "2.0.3"
        }
      }
    ]
  },
  "weaknesses": [
    {
      "source": "[email protected]",
      "type": "Secondary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-22"
        }
      ]
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "operator": "OR",
          "negate": false,
          "cpeMatch": [
            {
              "vulnerable": true,
              "criteria": "cpe:2.3:a:fluentd:fluentd:*:*:*:*:*:*:*:*",
              "versionEndExcluding": "1.19.3",
              "matchCriteriaId": "7AB3C52C-7D3D-4BA5-A8D0-8AC7DA6030EC"
            }
          ]
        }
      ]
    }
  ],
  "references": [
    {
      "url": "https://github.com/fluent/fluentd/commit/45c87a81f3ac0b72b3f9dcfe8cfb5f9038f81437",
      "source": "[email protected]",
      "tags": [
        "Patch"
      ]
    },
    {
      "url": "https://github.com/fluent/fluentd/pull/5391",
      "source": "[email protected]",
      "tags": [
        "Issue Tracking",
        "Patch"
      ]
    },
    {
      "url": "https://github.com/fluent/fluentd/releases/tag/v1.19.3",
      "source": "[email protected]",
      "tags": [
        "Product",
        "Release Notes"
      ]
    },
    {
      "url": "https://github.com/fluent/fluentd/security/advisories/GHSA-44hj-4m45-frj3",
      "source": "[email protected]",
      "tags": [
        "Mitigation",
        "Vendor Advisory"
      ]
    }
  ]
}