{"id":"CVE-2026-65597","aliases":["EUVD-2026-47641","GHSA-p3rg-hrf9-w9gj","GHSA-vhcw-f978-xjjg","ROOT-APP-NPM-CVE-2026-65597"],"status":"published","title":"n8n before 1.123.64 DOM-Based XSS via Unsandboxed iframe","description":"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.","severity":{"version":"4.0","score":8.2,"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","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-11","score":0.00296,"percentile":0.22461,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-79"],"published":"2026-07-22T11:21:44Z","modified":"2026-10-31T02:30:50Z","fixes":[{"ecosystem":"npm","package":"n8n","fixed_in":["1.123.64","2.30.1","2.29.8"],"sources":["ghsa","osv"]},{"ecosystem":"Root:npm","package":"n8n","fixed_in":["2.19.3-aikido.10","2.19.3-aikido.11","2.19.3-aikido.12","2.19.3-aikido.13","2.19.3-aikido.14","2.19.3-aikido.15"],"sources":["osv"]},{"ecosystem":"Root:npm","package":"@rootio/n8n","fixed_in":["2.19.3-root.io.10","2.19.3-root.io.11","2.19.3-root.io.12","2.19.3-root.io.13","2.19.3-root.io.14","2.19.3-root.io.15"],"sources":["osv"]}],"affected":[{"source":"ghsa","ecosystem":"npm","package":"n8n","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.123.64"}]}]},{"source":"ghsa","ecosystem":"npm","package":"n8n","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"2.30.0"},{"fixed":"2.30.1"}]}]},{"source":"ghsa","ecosystem":"npm","package":"n8n","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"2.0.0-rc.0"},{"fixed":"2.29.8"}]}]},{"source":"osv","ecosystem":"npm","package":"n8n","ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"1.123.64"}]}]},{"source":"osv","ecosystem":"npm","package":"n8n","ranges":[{"type":"SEMVER","events":[{"introduced":"2.30.0"},{"fixed":"2.30.1"}]}]},{"source":"osv","ecosystem":"npm","package":"n8n","ranges":[{"type":"SEMVER","events":[{"introduced":"2.0.0-rc.0"},{"fixed":"2.29.8"}]}]},{"source":"osv","ecosystem":"Root:npm","package":"n8n","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.19.3-aikido.10"},{"fixed":"2.19.3-aikido.11"},{"fixed":"2.19.3-aikido.12"},{"fixed":"2.19.3-aikido.13"},{"fixed":"2.19.3-aikido.14"},{"fixed":"2.19.3-aikido.15"}]}]},{"source":"osv","ecosystem":"Root:npm","package":"@rootio/n8n","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.19.3-root.io.10"},{"fixed":"2.19.3-root.io.11"},{"fixed":"2.19.3-root.io.12"},{"fixed":"2.19.3-root.io.13"},{"fixed":"2.19.3-root.io.14"},{"fixed":"2.19.3-root.io.15"}]}]}],"products":[{"vendor":"n8n","product":"n8n"},{"vendor":"n8n-io","product":"n8n"}],"references":[{"url":"https://github.com/n8n-io/n8n/security/advisories/GHSA-p3rg-hrf9-w9gj","tags":["vendor-advisory","Mitigation","Vendor Advisory","advisory","web"]},{"url":"https://www.vulncheck.com/advisories/n8n-before-dom-based-xss-via-unsandboxed-iframe","tags":["third-party-advisory","Third Party Advisory","advisory","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-65597","tags":["advisory"]},{"url":"https://github.com/n8n-io/n8n/releases/tag/n8n@1.123.64","tags":["web"]},{"url":"https://github.com/n8n-io/n8n/releases/tag/n8n@2.29.8","tags":["web"]},{"url":"https://github.com/n8n-io/n8n/releases/tag/n8n@2.30.1","tags":["web"]},{"url":"https://github.com/advisories/GHSA-p3rg-hrf9-w9gj"},{"url":"https://github.com/advisories/GHSA-vhcw-f978-xjjg"},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/65xxx/CVE-2026-65597.json","tags":["advisory"]},{"url":"https://github.com/n8n-io/n8n","tags":["package"]}],"sources":{"cve":[{"id":"CVE-2026-65597","title":"n8n before 1.123.64 DOM-Based XSS via Unsandboxed iframe","description":"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.","status":"published","published":"2026-07-22T11:21:44.721Z","modified":"2026-10-29T21:16:26.685Z","cvss":[{"version":"4.0","score":8.2,"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","level":"high","assessor":"cna"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T13:37:13.934727Z"}],"euvd":[{"id":"EUVD-2026-47641","description":"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.","status":"published","published":"2026-07-22T11:21:44Z","modified":"2026-10-29T21:16:26Z","cvss":[{"version":"4.0","score":8.2,"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","level":"high"}],"updated_at":"2026-11-02T16:59:13.894662Z"}],"ghsa":[{"id":"GHSA-p3rg-hrf9-w9gj","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.","status":"published","published":"2026-07-22T17:57:14Z","modified":"2026-07-22T17:58:39Z","cvss":[{"version":"4.0","score":8.2,"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","level":"high"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T14:40:50.444681Z"},{"id":"GHSA-vhcw-f978-xjjg","title":"Duplicate Advisory: DOM-Based XSS via Unsandboxed iframe srcdoc in HTML Preview","description":"## 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.","status":"withdrawn","published":"2026-07-22T12:32:18Z","modified":"2026-07-22T17:55:01Z","cvss":[{"version":"4.0","score":8.2,"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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"high"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T14:40:50.444681Z"}],"nvd":[{"id":"CVE-2026-65597","description":"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.","status":"published","published":"2026-07-22T12:18:19.913Z","modified":"2026-10-29T20:17:32.97Z","cvss":[{"version":"4.0","score":8.2,"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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"high","assessor":"secondary"},{"version":"3.1","score":5.4,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N","level":"medium","assessor":"primary"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T14:12:32.089897Z"}],"osv":[{"id":"CVE-2026-65597","title":"n8n before 1.123.64 DOM-Based XSS via Unsandboxed iframe","description":"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.","status":"published","published":"2026-07-22T11:21:44.721Z","modified":"2026-10-31T02:30:50.740133985Z","cvss":[{"version":"4.0","score":8.2,"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","level":"high"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T15:45:14.096824Z"},{"id":"GHSA-p3rg-hrf9-w9gj","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.","status":"published","published":"2026-07-22T17:57:14Z","modified":"2026-07-22T19:03:13.869641Z","cvss":[{"version":"4.0","score":8.2,"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","level":"high"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T15:46:52.534897Z"},{"id":"GHSA-vhcw-f978-xjjg","title":"Duplicate Advisory: DOM-Based XSS via Unsandboxed iframe srcdoc in HTML Preview","description":"## 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.","status":"withdrawn","published":"2026-07-22T12:32:18Z","modified":"2026-07-22T18:01:07.085844932Z","cvss":[{"version":"4.0","score":8.2,"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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"high"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T15:46:57.348035Z"},{"id":"ROOT-APP-NPM-CVE-2026-65597","title":"CVE-2026-65597 in n8n - Patched by Root","description":"Root has patched CVE-2026-65597 in the n8n package for Root:npm. Multiple fixed versions available.","status":"published","published":"2026-10-06T03:42:47Z","modified":"2026-10-06T04:15:06.978482104Z","updated_at":"2026-11-02T15:53:27.649662Z"}]}}