CVE-2026-25054CWE-79CWE-80

n8n is Vulnerable to Stored Cross-Site Scripting via Markdown Rendering in Workflow UI

High · published February 4, 2026

CVSS v4.0
8.5
EPSS
0%
Percentile
11.5
In the wild
Unconfirmed
What it is

n8n is an open source workflow automation platform. Prior to versions 1.123.9 and 2.2.1, a Cross-Site Scripting (XSS) vulnerability existed in a markdown rendering component used in n8n's interface, including workflow sticky notes and other areas that support markdown content. An authenticated user with permission to create or modify workflows could abuse this to execute scripts with same-origin privileges when other users interact with a maliciously crafted workflow. This could lead to session hijacking and account takeover. This issue has been patched in versions 1.123.9 and 2.2.1.

The record
Technical detail
CVSS v4.0
8.5 · HIGH
Vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
EPSS
0.00216 · 11.5th percentile
Weaknesses
CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting'); CWE-80 · Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS)
Published
2026-02-04T16:47Z
EPSS history
Timeline
  • 04 FEB 16:47Z
    n8n is Vulnerable to Stored Cross-Site Scripting via Markdown Rendering in Workflow UI
    cvelistv5