CVE-2026-56348 (GCVE-0-2026-56348)

Vulnerability from cvelistv5 – Published: 2026-06-22 21:04 – Updated: 2026-06-22 21:04
VLAI
Title
n8n - Credential Exfiltration via Allowed HTTP Request Domains Bypass in Dynamic Node Parameters Endpoint
Summary
n8n before 2.20.0 contains a credential exfiltration vulnerability in the POST /rest/dynamic-node-parameters/options endpoint that allows authenticated users to bypass Allowed HTTP Request Domains restrictions. Attackers with credential access can cause the n8n server to issue HTTP requests with credentials to unauthorized hosts, exfiltrating sensitive authentication data.
Severity
5.3 (Medium)
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:L/SI:L/SA:L
9.1 (Critical)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:L
CWE
  • CWE-918 - Server-Side Request Forgery (SSRF)
Assigner
References
Impacted products
Vendor Product Version
n8n n8n Affected: 0 , < 2.20.0 (semver)
Unaffected: 2.20.0 (semver)
Create a notification for this product.
Date Public
2026-05-13 00:00
Credits
vnth4nhnt
Show details on NVD website
To clipboard 

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              "version": "2.20.0",
              "versionType": "semver"
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          "value": "n8n before 2.20.0 contains a credential exfiltration vulnerability in the POST /rest/dynamic-node-parameters/options endpoint that allows authenticated users to bypass Allowed HTTP Request Domains restrictions. Attackers with credential access can cause the n8n server to issue HTTP requests with credentials to unauthorized hosts, exfiltrating sensitive authentication data."
        }
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            "scope": "CHANGED",
            "userInteraction": "NONE",
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            "version": "3.1"
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          "descriptions": [
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      "providerMetadata": {
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        "orgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
        "shortName": "VulnCheck"
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      "references": [
        {
          "name": "GitHub Security Advisory (GHSA-3875-8gcx-7v46)",
          "tags": [
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          ],
          "url": "https://github.com/n8n-io/n8n/security/advisories/GHSA-3875-8gcx-7v46"
        },
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        }
      ],
      "title": "n8n - Credential Exfiltration via Allowed HTTP Request Domains Bypass in Dynamic Node Parameters Endpoint",
      "x_generator": {
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  "cveMetadata": {
    "assignerOrgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
    "assignerShortName": "VulnCheck",
    "cveId": "CVE-2026-56348",
    "datePublished": "2026-06-22T21:04:51.642Z",
    "dateReserved": "2026-06-20T18:13:07.363Z",
    "dateUpdated": "2026-06-22T21:04:51.642Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}


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