CVE-2026-65597

UNKNOWN 0.0

n8n before 1.123.64 DOM-Based XSS via Unsandboxed iframe

CVSS Score

0.0

EPSS Score

0.0%

EPSS Percentile

0th

n8n before 1.123.64, 2.x before 2.29.8, and before 2.30.1 contains a DOM-based cross-site scripting vulnerability in the HTML preview, which renders execution output into an iframe srcdoc without the sandbox attribute. A sanitizer bypass allows injected script to execute same-origin as the editor. When a victim opens the preview, the script can call authenticated APIs using the victim's session. An account with global:member privileges can exploit the issue.

CWE	CWE-79
Vendor	n8n-io
Product	n8n
Published	Jul 22, 2026

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Affected Versions

n8n-io / n8n

0 < 1.123.64

n8n-io / n8n

0 < 2.30.1

n8n-io / n8n

0 < 2.29.8

References

NVD ↗ CVE.org ↗ EPSS Data ↗

github.com: https://github.com/n8n-io/n8n/security/advisories/GHSA-p3rg-hrf9-w9gj vulncheck.com: https://www.vulncheck.com/advisories/n8n-before-dom-based-xss-via-unsandboxed-iframe

Credits

🔍 odgrso