CVE-2026-56348— n8n - Credential Exfiltration via Allowed HTTP Request Domains Bypass in Dynamic Node Parameters Endpoint
Possible ATT&CK Techniques 1AI
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I. Basic Information for CVE-2026-56348
Vulnerability Information
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Vulnerability Title
n8n - Credential Exfiltration via Allowed HTTP Request Domains Bypass in Dynamic Node Parameters Endpoint
Source: CVE Program / CVE List V5
Vulnerability Description
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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
服务端请求伪造(SSRF)
Source: CVE Program / CVE List V5
Vulnerability Title
n8n 服务端请求伪造漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
n8n是n8n公司开源的一个可扩展的工作流自动化工具。 n8n 2.20.0之前版本存在服务端请求伪造漏洞，该漏洞源于POST /rest/dynamic-node-parameters/options端点存在SSRF漏洞，允许绕过Allowed HTTP Request Domains限制，可能导致授权用户凭证泄露。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
II. Public POCs for CVE-2026-56348
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Vendor Advisories for CVE-2026-56348 (2)
IV. Related Vulnerabilities
Same product: n8n
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n8n before 2.32.1 Path Traversal via computer-use search_fil - CVE-2026-72771
n8n before 2.32.1 Credential Restriction Bypass via AI/LLM N - CVE-2026-72772
n8n before 2.32.1 Authentication Bypass via Token Exchange
Same vendor: n8n
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n8n - Arbitrary File Read and Execution via ExecuteWorkflow - CVE-2026-56353
n8n - Authentication Bypass in Chat Trigger Node - CVE-2026-56349
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Same weakness: CWE-918
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MLflow: Unauthenticated full-read SSRF in webhook delivery: - CVE-2026-35219
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V. Comments for CVE-2026-56348
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