CVE-2026-72749

{
  "id": "CVE-2026-72749",
  "sourceIdentifier": "[email protected]",
  "published": "2026-08-11T13:19:05.960",
  "lastModified": "2026-10-29T20:17:33.513",
  "vulnStatus": "Analyzed",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "n8n before 1.123.67, 2.31.5, and 2.32.1 contains a prototype pollution vulnerability in the Edit Fields (Set) node. The node assigns output fields via a dot-notation path setter without restricting the field name, allowing an authenticated user to name a field after an inherited built-in method path and corrupt a shared global in the main Node.js process. Because that global is used on the request-authentication path, the instance then fails every authenticated request, causing an instance-wide denial of service for all users until the process is restarted."
    },
    {
      "lang": "es",
      "value": "n8n antes de 1.123.67, 2.31.5 y 2.32.1 contiene una vulnerabilidad de contaminación de prototipos en el nodo Edit Fields (Set). El nodo asigna campos de salida a través de un asignador de ruta de notación de puntos sin restringir el nombre del campo, permitiendo a un usuario autenticado nombrar un campo siguiendo una ruta de método incorporado heredado y corromper una variable global compartida en el proceso principal de Node.js. Debido a que esa variable global se utiliza en la ruta de autenticación de solicitudes, la instancia falla entonces cada solicitud autenticada, causando una denegación de servicio a nivel de instancia para todos los usuarios hasta que se reinicie el proceso."
    }
  ],
  "affected": [
    {
      "source": "[email protected]",
      "affectedData": [
        {
          "vendor": "n8n-io",
          "product": "n8n",
          "defaultStatus": "unaffected",
          "packageURL": "pkg:npm/n8n",
          "versions": [
            {
              "version": "0",
              "lessThan": "1.123.67",
              "versionType": "semver",
              "status": "affected"
            },
            {
              "version": "1.123.67",
              "versionType": "semver",
              "status": "unaffected"
            }
          ]
        },
        {
          "vendor": "n8n-io",
          "product": "n8n",
          "defaultStatus": "unaffected",
          "packageURL": "pkg:npm/n8n",
          "versions": [
            {
              "version": "2.32.0",
              "lessThan": "2.32.1",
              "versionType": "semver",
              "status": "affected"
            },
            {
              "version": "2.32.1",
              "versionType": "semver",
              "status": "unaffected"
            }
          ]
        },
        {
          "vendor": "n8n-io",
          "product": "n8n",
          "defaultStatus": "unaffected",
          "packageURL": "pkg:npm/n8n",
          "versions": [
            {
              "version": "2.0.0-rc.0",
              "lessThan": "2.31.5",
              "versionType": "semver",
              "status": "affected"
            },
            {
              "version": "2.31.5",
              "versionType": "semver",
              "status": "unaffected"
            }
          ]
        }
      ]
    }
  ],
  "metrics": {
    "cvssMetricV40": [
      {
        "source": "[email protected]",
        "type": "Secondary",
        "cvssData": {
          "version": "4.0",
          "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
          "baseScore": 7.1,
          "baseSeverity": "HIGH",
          "attackVector": "NETWORK",
          "attackComplexity": "LOW",
          "attackRequirements": "NONE",
          "privilegesRequired": "LOW",
          "userInteraction": "NONE",
          "vulnConfidentialityImpact": "NONE",
          "vulnIntegrityImpact": "NONE",
          "vulnAvailabilityImpact": "HIGH",
          "subConfidentialityImpact": "NONE",
          "subIntegrityImpact": "NONE",
          "subAvailabilityImpact": "NONE",
          "exploitMaturity": "NOT_DEFINED",
          "confidentialityRequirement": "NOT_DEFINED",
          "integrityRequirement": "NOT_DEFINED",
          "availabilityRequirement": "NOT_DEFINED",
          "modifiedAttackVector": "NOT_DEFINED",
          "modifiedAttackComplexity": "NOT_DEFINED",
          "modifiedAttackRequirements": "NOT_DEFINED",
          "modifiedPrivilegesRequired": "NOT_DEFINED",
          "modifiedUserInteraction": "NOT_DEFINED",
          "modifiedVulnConfidentialityImpact": "NOT_DEFINED",
          "modifiedVulnIntegrityImpact": "NOT_DEFINED",
          "modifiedVulnAvailabilityImpact": "NOT_DEFINED",
          "modifiedSubConfidentialityImpact": "NOT_DEFINED",
          "modifiedSubIntegrityImpact": "NOT_DEFINED",
          "modifiedSubAvailabilityImpact": "NOT_DEFINED",
          "Safety": "NOT_DEFINED",
          "Automatable": "NOT_DEFINED",
          "Recovery": "NOT_DEFINED",
          "valueDensity": "NOT_DEFINED",
          "vulnerabilityResponseEffort": "NOT_DEFINED",
          "providerUrgency": "NOT_DEFINED"
        }
      }
    ],
    "cvssMetricV31": [
      {
        "source": "[email protected]",
        "type": "Primary",
        "cvssData": {
          "version": "3.1",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
          "baseScore": 6.5,
          "baseSeverity": "MEDIUM",
          "attackVector": "NETWORK",
          "attackComplexity": "LOW",
          "privilegesRequired": "LOW",
          "userInteraction": "NONE",
          "scope": "UNCHANGED",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "availabilityImpact": "HIGH"
        },
        "exploitabilityScore": 2.8,
        "impactScore": 3.6
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "timestamp": "2026-08-11T17:41:04.589878Z",
          "id": "CVE-2026-72749",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "version": "2.0.3"
        }
      }
    ]
  },
  "weaknesses": [
    {
      "source": "[email protected]",
      "type": "Secondary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-1321"
        }
      ]
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "operator": "OR",
          "negate": false,
          "cpeMatch": [
            {
              "vulnerable": true,
              "criteria": "cpe:2.3:a:n8n:n8n:*:*:*:*:*:node.js:*:*",
              "versionEndExcluding": "1.123.67",
              "matchCriteriaId": "4CBABC9C-8053-4556-99DF-B6A7BB96DFC0"
            },
            {
              "vulnerable": true,
              "criteria": "cpe:2.3:a:n8n:n8n:*:*:*:*:*:node.js:*:*",
              "versionStartIncluding": "2.31.0",
              "versionEndExcluding": "2.31.5",
              "matchCriteriaId": "9834D769-4344-496B-8E27-78FC32EA8E76"
            },
            {
              "vulnerable": true,
              "criteria": "cpe:2.3:a:n8n:n8n:2.32.0:*:*:*:*:node.js:*:*",
              "matchCriteriaId": "4AC4E002-974B-4748-A5CB-F8A40E4F3B24"
            }
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      ]
    }
  ],
  "references": [
    {
      "url": "https://github.com/n8n-io/n8n/security/advisories/GHSA-xwx6-jjhv-84p8",
      "source": "[email protected]",
      "tags": [
        "Mitigation",
        "Vendor Advisory"
      ]
    },
    {
      "url": "https://www.vulncheck.com/advisories/n8n-before-prototype-pollution-via-edit-fields",
      "source": "[email protected]",
      "tags": [
        "Third Party Advisory"
      ]
    }
  ]
}