Vulnerability · Published Jul 22, 2026 · Assigned by VulnCheck

CVE-2026-65597n8n before 1.123.64 DOM-Based XSS via Unsandboxed iframe

High 8.2

In plain English

A high-severity cross-site scripting in n8n from n8n-io. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 22% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 4.0)8.2High

Exploit odds (30 days)0.3%top 77.7% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official 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.

Affected packages & fixed versions

Ecosystem	Package	Fixed in	Advisory
npm	n8n	1.123.64	GHSA-p3rg-hrf9-w9gj
npm	n8n	2.30.1	GHSA-p3rg-hrf9-w9gj
npm	n8n	2.29.8	GHSA-p3rg-hrf9-w9gj

Affected products (as reported)

Vendor	Product	Versions
n8n-io	n8n	0 – before 1.123.64
n8n-io	n8n	2.30.0 – before 2.30.1
n8n-io	n8n	2.0.0-rc.0 – before 2.29.8

Weakness: CWE-79 · 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

References

GitHub Security Advisory (GHSA-p3rg-hrf9-w9gj) vendor-advisory
VulnCheck Advisory: n8n before 1.123.64 DOM-Based XSS via Unsandboxed iframe third-party-advisory