{"id":"GHSA-vhcw-f978-xjjg","title":"Duplicate Advisory: DOM-Based XSS via Unsandboxed iframe srcdoc in HTML Preview","summary":"Duplicate Advisory: DOM-Based XSS via Unsandboxed iframe srcdoc in HTML Preview","severity":"high","cwe":["CWE-79"],"vendor":"n8n","product":"n8n","ecosystem":"npm","affected":["n8n < 1.123.64"],"published":"2026-07-22","updated":"2026-07-22","source":"GHSA","sourceUrl":"https://github.com/advisories/GHSA-vhcw-f978-xjjg","references":[{"url":"https://github.com/n8n-io/n8n/security/advisories/GHSA-p3rg-hrf9-w9gj"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-65597"},{"url":"https://www.vulncheck.com/advisories/n8n-before-dom-based-xss-via-unsandboxed-iframe"},{"url":"https://github.com/advisories/GHSA-vhcw-f978-xjjg"}],"tags":["ghsa","npm"],"ingestedAt":"2026-07-22T18:05:38.663Z","slug":"GHSA-vhcw-f978-xjjg","body":"## Overview\n\n## Duplicate Advisory\n\nThis advisory has been withdrawn because it is a duplicate of GHSA-p3rg-hrf9-w9gj. This link is maintained to preserve external references.\n\n## Original Description\nn8n 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.\n\n## Affected packages\n\n- `n8n < 1.123.64`\n\n## Remediation\n\nRefer to the advisory for the patched release.","depth":"twilight","depthScore":41,"depthScoreParts":{"impact":41.3,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}