9.9

CVE-2026-56348

n8n - Credential Exfiltration via Allowed HTTP Request Domains Bypass in Dynamic Node Parameters Endpoint

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.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
N8n ≫ N8n SwEditioncommunity SwPlatformnode.js Version < 2.20.0
N8n ≫ N8n SwEditionenterprise SwPlatformnode.js Version < 2.20.0
VulnDex Vulnerability Enrichment
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Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.26% 0.174
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
nvd@nist.gov 9.9 3.1 6
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
disclosure@vulncheck.com 5.3 0 0
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/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
disclosure@vulncheck.com 9.1 3.1 5.3
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:L
CWE-918 Server-Side Request Forgery (SSRF)

The web server receives a URL or similar request from an upstream component and retrieves the contents of this URL, but it does not sufficiently ensure that the request is being sent to the expected destination.

https://github.com/n8n-io/n8n/security/advisories/GHSA-3875-8gcx-7v46
Vendor Advisory
https://www.vulncheck.com/advisories/n8n-credential-exfiltration-via-allowed-http-request-domains-bypass-in-dynamic-node-parameters-endpoint
Third Party Advisory