{"id":"GHSA-p3rg-hrf9-w9gj","revision":"379a5333210a4a79ab556cd9e88f9678","records":[{"revision":"379a5333210a4a79ab556cd9e88f9678","observedAt":"2026-10-24T13:17:17.793+00:00","statement":{"source":"osv","id":"GHSA-p3rg-hrf9-w9gj","aliases":["CVE-2026-65597"],"title":"n8n: DOM-Based XSS via Unsandboxed iframe srcdoc in HTML Preview","description":"## Impact\n\nThe HTML preview renders execution output into an `iframe srcdoc` without `sandbox`, so a sanitizer bypass lets injected script run same-origin as the editor. When a victim opens the preview, it can call authenticated APIs with their session. An account with `global:member` privileges can exploit it.\n\n## Patches\n\nThe issue has been fixed in n8n versions 1.123.64, 2.29.8, and 2.30.1. Users should upgrade to one of these versions or later to remediate the vulnerability.\n\n## Workarounds\n\nIf upgrading is not immediately possible, administrators should consider the following temporary mitigations:\n- Restrict n8n instance access to fully trusted users only.\n- Set the `N8N_CONTENT_SECURITY_POLICY` environment variable to a policy that blocks inline scripts.\n- Avoid exposing workflows that render externally-controlled input into the HTML node or binary HTML preview to untrusted users.\n\nThese workarounds do not fully remediate the risk and should only be used as short-term mitigation measures.","state":0,"publishedAt":"2026-07-22T17:57:14+00:00","modifiedAt":"2026-07-22T19:03:13.869641+00:00","affected":[{"ecosystem":"npm","name":"n8n","ranges":[{"type":"SEMVER","events":[{"kind":"introduced","version":"0"},{"kind":"fixed","version":"1.123.64"}]}],"versions":[],"rawVersionEvidence":null},{"ecosystem":"npm","name":"n8n","ranges":[{"type":"SEMVER","events":[{"kind":"introduced","version":"2.30.0"},{"kind":"fixed","version":"2.30.1"}]}],"versions":[],"rawVersionEvidence":null},{"ecosystem":"npm","name":"n8n","ranges":[{"type":"SEMVER","events":[{"kind":"introduced","version":"2.0.0-rc.0"},{"kind":"fixed","version":"2.29.8"}]}],"versions":[],"rawVersionEvidence":null}],"metrics":[{"system":"CVSS_V4","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:A/VC:H/VI:L/VA:N/SC:H/SI:L/SA:N","score":null,"severity":null},{"system":"Publisher rating","vector":null,"score":null,"severity":"HIGH"}],"references":["https://github.com/n8n-io/n8n/security/advisories/GHSA-p3rg-hrf9-w9gj","https://nvd.nist.gov/vuln/detail/CVE-2026-65597","https://github.com/n8n-io/n8n","https://github.com/n8n-io/n8n/releases/tag/n8n@1.123.64","https://github.com/n8n-io/n8n/releases/tag/n8n@2.29.8","https://github.com/n8n-io/n8n/releases/tag/n8n@2.30.1","https://www.vulncheck.com/advisories/n8n-before-dom-based-xss-via-unsandboxed-iframe"],"sourceUrl":"https://github.com/advisories/GHSA-p3rg-hrf9-w9gj","license":"GitHub Advisory Database · CC-BY-4.0","key":"osv:GHSA-p3rg-hrf9-w9gj","identifiers":["GHSA-p3rg-hrf9-w9gj","CVE-2026-65597"]},"retained":false,"historicalAffected":[]}],"coverage":[]}