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Vulnerability Details CVE-2026-56359

n8n before 2.8.0 contains a cross-site scripting vulnerability in the credential management flow where authenticated users can inject malicious JavaScript URLs into OAuth2 credential Authorization URL fields. Attackers can craft malicious credentials and trick victims into clicking the OAuth authorization button, executing arbitrary scripts in their browser session with the victim's privileges.
Exploit prediction scoring system (EPSS) score
CVSS Severity
CVSS v3 Score 5.4
Products affected by CVE-2026-56359
  • N8n » N8n » Version: 2.7.0
    cpe:2.3:a:n8n:n8n:2.7.0
  • N8n » N8n » Version: 2.7.1
    cpe:2.3:a:n8n:n8n:2.7.1
  • N8n » N8n » Version: 2.7.2
    cpe:2.3:a:n8n:n8n:2.7.2
  • N8n » N8n » Version: 2.7.3
    cpe:2.3:a:n8n:n8n:2.7.3
  • N8n » N8n » Version: 2.7.4
    cpe:2.3:a:n8n:n8n:2.7.4
  • N8n » N8n » Version: 2.7.5
    cpe:2.3:a:n8n:n8n:2.7.5


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