CVE-2026-44160

{
  "id": "CVE-2026-44160",
  "sourceIdentifier": "[email protected]",
  "published": "2026-07-08T22:17:14.600",
  "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's in_http and in_forward plugins support gzip-compressed data but enforce limits only on compressed payloads through settings such as body_size_limit and chunk_size_limit, allowing crafted compressed payloads to decompress in memory to an excessive size and cause denial of service through memory exhaustion. 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 y así sucesivamente. Antes de la versión 1.19.3, los plugins in_http e in_forward de Fluentd soportan datos comprimidos con gzip, pero aplican límites solo a las cargas útiles comprimidas a través de configuraciones como body_size_limit y chunk_size_limit, permitiendo que cargas útiles comprimidas elaboradas se descompriman en memoria a un tamaño excesivo y causen denegación de servicio a través del agotamiento de la memoria. 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:N/I:N/A:H",
          "baseScore": 7.5,
          "baseSeverity": "HIGH",
          "attackVector": "NETWORK",
          "attackComplexity": "LOW",
          "privilegesRequired": "NONE",
          "userInteraction": "NONE",
          "scope": "UNCHANGED",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "availabilityImpact": "HIGH"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 3.6
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "timestamp": "2026-07-09T19:34:49.901088Z",
          "id": "CVE-2026-44160",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "yes"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "version": "2.0.3"
        }
      }
    ]
  },
  "weaknesses": [
    {
      "source": "[email protected]",
      "type": "Secondary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-409"
        }
      ]
    }
  ],
  "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/f5f2b7cddf8aab3932e6dec9fa367a5f3eb27e10",
      "source": "[email protected]",
      "tags": [
        "Patch"
      ]
    },
    {
      "url": "https://github.com/fluent/fluentd/pull/5393",
      "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-j9cw-hwqf-85w7",
      "source": "[email protected]",
      "tags": [
        "Mitigation",
        "Vendor Advisory"
      ]
    }
  ]
}