CVE-2026-65597

published 2026-07-22

CVE-2026-65597: 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…

Priority P4 27 medium 5.4 CVSS 3.1

AV N AC L PR L UI R S C C L I L A N

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

9 ranges

Vendor	Product	Version range	Fixed in
n8n-io	n8n	< 1.123.64	1.123.64
n8n-io	n8n	< 2.30.1	2.30.1
n8n-io	n8n	< 2.29.8	2.29.8
n8n	n8n	< 1.123.64	1.123.64
n8n	n8n	—	—
n8n	n8n	>= 0 < 1.123.64	1.123.64
n8n	n8n	>= 2.0.0 < 2.29.8	2.29.8
n8n	n8n	>= 2.0.0-rc.0 < 2.29.8	2.29.8
n8n	n8n	>= 2.30.0 < 2.30.1	2.30.1

CVSS provenance

nvd v3.1 5.4 MEDIUM CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

nvd v4.0 8.2 HIGH 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

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CWE-79