CVE-2026-56359
n8n - Cross-Site Scripting in Credential Management OAuth2 Authorization URL
CVSS Score
5.4
EPSS Score
0.1%
EPSS Percentile
4th
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.
| CWE | CWE-79 |
| Vendor | n8n |
| Product | n8n |
| Published | Jul 8, 2026 |
| Last Updated | Jul 9, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
Required
Scope
Changed
Confidentiality
Low
Integrity
Low
Availability
None
Affected Versions
n8n / n8n
0 < 2.8.0
n8n / n8n
0 < 2.6.4
References
Credits
🔍 yohannslm