FKIE_CVE-2025-49595

Vulnerability from fkie_nvd - Published: 2025-07-03 13:15 - Updated: 2025-09-04 16:49
Severity ?
4.9 (Medium) - CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H
Summary
n8n is a workflow automation platform. Prior to version 1.99.0, there is a denial of Service vulnerability in /rest/binary-data endpoint when processing empty filesystem URIs (filesystem:// or filesystem-v2://). This allows authenticated attackers to cause service unavailability through malformed filesystem URI requests, effecting the /rest/binary-data endpoint and n8n.cloud instances (confirmed HTTP/2 524 timeout responses). Attackers can exploit this by sending GET requests with empty filesystem URIs (filesystem:// or filesystem-v2://) to the /rest/binary-data endpoint, causing resource exhaustion and service disruption. This issue has been patched in version 1.99.0.
References
security-advisories@github.comhttps://github.com/n8n-io/n8n/commit/43c52a8b4f844e91b02e3cc9df92826a2d7b6052Patch
security-advisories@github.comhttps://github.com/n8n-io/n8n/pull/16229Patch
security-advisories@github.comhttps://github.com/n8n-io/n8n/security/advisories/GHSA-pr9r-gxgp-9rm8Patch, Third Party Advisory
Impacted products
Vendor Product Version
n8n n8n *
To clipboard 

{
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:n8n:n8n:*:*:*:*:*:node.js:*:*",
              "matchCriteriaId": "4A5FBC4C-F10F-424D-82D6-039910014EEA",
              "versionEndExcluding": "1.99.0",
              "vulnerable": true
            }
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          "negate": false,
          "operator": "OR"
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  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "n8n is a workflow automation platform. Prior to version 1.99.0, there is a denial of Service vulnerability in /rest/binary-data endpoint when processing empty filesystem URIs (filesystem:// or filesystem-v2://). This allows authenticated attackers to cause service unavailability through malformed filesystem URI requests, effecting the /rest/binary-data endpoint and n8n.cloud instances (confirmed HTTP/2 524 timeout responses). Attackers can exploit this by sending GET requests with empty filesystem URIs (filesystem:// or filesystem-v2://) to the /rest/binary-data endpoint, causing resource exhaustion and service disruption. This issue has been patched in version 1.99.0."
    },
    {
      "lang": "es",
      "value": "n8n es una plataforma de automatizaci\u00f3n de flujos de trabajo. Antes de la versi\u00f3n 1.99.0, exist\u00eda una vulnerabilidad de denegaci\u00f3n de servicio en el endpoint /rest/binary-data al procesar URIs de sistemas de archivos vac\u00edas (filesystem:// o filesystem-v2://). Esto permit\u00eda a atacantes autenticados provocar la indisponibilidad del servicio mediante solicitudes de URI de sistemas de archivos malformadas, lo que afectaba al endpoint /rest/binary-data y a las instancias de n8n.cloud (respuestas HTTP/2 con tiempo de espera 524 confirmadas). Los atacantes pod\u00edan explotar esto enviando solicitudes GET con URIs de sistemas de archivos vac\u00edas (filesystem:// o filesystem-v2://) al endpoint /rest/binary-data, lo que provocaba el agotamiento de recursos y la interrupci\u00f3n del servicio. Este problema se ha corregido en la versi\u00f3n 1.99.0."
    }
  ],
  "id": "CVE-2025-49595",
  "lastModified": "2025-09-04T16:49:06.910",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 4.9,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "HIGH",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 1.2,
        "impactScore": 3.6,
        "source": "security-advisories@github.com",
        "type": "Secondary"
      }
    ]
  },
  "published": "2025-07-03T13:15:28.690",
  "references": [
    {
      "source": "security-advisories@github.com",
      "tags": [
        "Patch"
      ],
      "url": "https://github.com/n8n-io/n8n/commit/43c52a8b4f844e91b02e3cc9df92826a2d7b6052"
    },
    {
      "source": "security-advisories@github.com",
      "tags": [
        "Patch"
      ],
      "url": "https://github.com/n8n-io/n8n/pull/16229"
    },
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      "source": "security-advisories@github.com",
      "tags": [
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        "Third Party Advisory"
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      "url": "https://github.com/n8n-io/n8n/security/advisories/GHSA-pr9r-gxgp-9rm8"
    }
  ],
  "sourceIdentifier": "security-advisories@github.com",
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-400"
        }
      ],
      "source": "security-advisories@github.com",
      "type": "Secondary"
    }
  ]
}


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