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CVE-2026-56354

Estado: AnalizadaMedia (5.1)—

n8n before 1.123.24, 2.10.4, and 2.12.0 (across its 1.x and 2.x branches) contains cross-site scripting and open redirect vulnerabilities in the Form Node due to unsanitized HTML description fields and overly permissive iframe sandbox policies. Authenticated users with workflow creation permissions can inject malicious scripts or redirect parameters to perform stored XSS attacks or phishing redirects against end users.

CVSS

Probabilidad de explotación (EPSS)

EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).

Tecnologías afectadas (1)

N8N — N8N

CWE

Referencias

JSON original (NVD)

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{
  "id": "CVE-2026-56354",
  "cveTags": [],
  "metrics": {
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        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-56354",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2026-07-10T16:42:31.372790Z"
        }
      }
    ],
    "cvssMetricV31": [
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        "source": "disclosure@vulncheck.com",
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          "baseSeverity": "MEDIUM",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:N/I:L/A:N",
          "integrityImpact": "LOW",
          "userInteraction": "REQUIRED",
          "attackComplexity": "LOW",
          "availabilityImpact": "NONE",
          "privilegesRequired": "LOW",
          "confidentialityImpact": "NONE"
        },
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        "exploitabilityScore": 2.3
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        "type": "Primary",
        "source": "nvd@nist.gov",
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    "cvssMetricV40": [
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          "version": "4.0",
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          "baseSeverity": "MEDIUM",
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          "exploitMaturity": "NOT_DEFINED",
          "providerUrgency": "NOT_DEFINED",
          "userInteraction": "PASSIVE",
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          "attackRequirements": "NONE",
          "privilegesRequired": "LOW",
          "subIntegrityImpact": "LOW",
          "vulnIntegrityImpact": "NONE",
          "integrityRequirement": "NOT_DEFINED",
          "modifiedAttackVector": "NOT_DEFINED",
          "subAvailabilityImpact": "NONE",
          "vulnAvailabilityImpact": "NONE",
          "availabilityRequirement": "NOT_DEFINED",
          "modifiedUserInteraction": "NOT_DEFINED",
          "modifiedAttackComplexity": "NOT_DEFINED",
          "subConfidentialityImpact": "LOW",
          "vulnConfidentialityImpact": "NONE",
          "confidentialityRequirement": "NOT_DEFINED",
          "modifiedAttackRequirements": "NOT_DEFINED",
          "modifiedPrivilegesRequired": "NOT_DEFINED",
          "modifiedSubIntegrityImpact": "NOT_DEFINED",
          "modifiedVulnIntegrityImpact": "NOT_DEFINED",
          "vulnerabilityResponseEffort": "NOT_DEFINED",
          "modifiedSubAvailabilityImpact": "NOT_DEFINED",
          "modifiedVulnAvailabilityImpact": "NOT_DEFINED",
          "modifiedSubConfidentialityImpact": "NOT_DEFINED",
          "modifiedVulnConfidentialityImpact": "NOT_DEFINED"
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  },
  "affected": [
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      "source": "disclosure@vulncheck.com",
      "affectedData": [
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          "vendor": "n8n",
          "product": "n8n",
          "versions": [
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              "status": "affected",
              "version": "0",
              "lessThan": "1.123.24",
              "versionType": "semver"
            },
            {
              "status": "unaffected",
              "version": "1.123.24",
              "versionType": "semver"
            },
            {
              "status": "affected",
              "version": "2.0.0-rc.0",
              "lessThan": "2.10.4",
              "versionType": "semver"
            },
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              "version": "2.10.4",
              "versionType": "semver"
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              "status": "affected",
              "version": "2.11.0",
              "lessThan": "2.12.0",
              "versionType": "semver"
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              "status": "unaffected",
              "version": "2.12.0",
              "versionType": "semver"
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          ],
          "packageURL": "pkg:npm/n8n",
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          ],
          "packageURL": "pkg:npm/n8n",
          "defaultStatus": "unaffected"
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  ],
  "published": "2026-07-10T15:16:43.030",
  "references": [
    {
      "url": "https://github.com/n8n-io/n8n/security/advisories/GHSA-w673-8fjw-457c",
      "tags": [
        "Mitigation",
        "Vendor Advisory"
      ],
      "source": "disclosure@vulncheck.com"
    },
    {
      "url": "https://www.vulncheck.com/advisories/n8n-cross-site-scripting-and-open-redirect-in-form-node",
      "tags": [
        "Third Party Advisory"
      ],
      "source": "disclosure@vulncheck.com"
    }
  ],
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "disclosure@vulncheck.com",
      "description": [
        {
          "lang": "en",
          "value": "CWE-79"
        }
      ]
    }
  ],
  "descriptions": [
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      "lang": "en",
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    }
  ],
  "lastModified": "2026-07-13T16:54:48.843",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
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              "versionEndExcluding": "1.123.24"
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}