{"id":"CVE-2026-65597","aliases":["GHSA-p3rg-hrf9-w9gj"],"url":"https://o3.security/vulnerability/CVE-2026-65597","summary":"n8n before 1.123.64 DOM-Based XSS via Unsandboxed iframe","details":"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.","published":"2026-07-22T11:21:44.721Z","modified":"2026-08-12T03:51:19.495255226Z","cvss":null,"epss":{"score":0.00214,"percentile":0.11629,"asOf":"2026-09-04"},"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"npm","name":"n8n","fixedVersion":"1.123.64"},{"ecosystem":"npm","name":"n8n","fixedVersion":"2.30.1"},{"ecosystem":"npm","name":"n8n","fixedVersion":"2.29.8"}],"fix":null,"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/65xxx/CVE-2026-65597.json"},{"type":"ADVISORY","url":"https://github.com/n8n-io/n8n/security/advisories/GHSA-p3rg-hrf9-w9gj"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-65597"},{"type":"ADVISORY","url":"https://www.vulncheck.com/advisories/n8n-before-dom-based-xss-via-unsandboxed-iframe"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-12T03:51:19.495255226Z"}}