CVE-2026-25054

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

State: Published
Severity: 8.5 High
Published: Feb 4, 2026
Updated: Feb 5, 2026
Reserved: Jan 28, 2026

Description

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.

Scores

CVSS	Score	Vector	Source
4.0	8.5 High	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	GitHub_M

Weaknesses

CWE-80 Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS)
CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Affected Products

Product	Versions
n8nn8n-io	< 1.123.9Affected < 2.2.1Affected

References

https://github.com/n8n-io/n8n/security/advisories/GHSA-qpq4-pw7f-pp8w

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