CVE-2026-25054: N8n Cross-Site Scripting Vulnerability

Q: What is CVE-2026-25054?

CVE-2026-25054 is a security vulnerability in N8n involving n8n Has Stored Cross-site Scripting via Markdown Rendering in Workflow UI under CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting').

Q: Which N8n versions are affected?

Affected versions include releases prior to 2.2.1, 1.123.9 across affected packages: n8n.

Q: What version fixes CVE-2026-25054?

Upgrading to 2.2.1, 1.123.9 (or the latest patched release for your respective branch) resolves the vulnerability.

Q: Is n8n affected?

Yes, n8n is affected in releases prior to 2.2.1, 1.123.9. Upgrade your dependency to 2.2.1, 1.123.9 or later.

Q: What CWE is associated with CVE-2026-25054?

CVE-2026-25054 is classified under CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') (The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.).

Q: How can I check npm dependencies for CVE-2026-25054?

Run the dependency tree command: 'npm ls n8n'. This command lists direct and transitive dependencies in your build configuration so you can verify if a vulnerable version is resolved.

HIGH

Advisory Identifier: GHSA-qpq4-pw7f-pp8w

CWE-79

Published 2026-02-04

Advisory Summary

CVE-2026-25054 is a HIGH cross-site scripting vulnerability (CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')) affecting N8n libraries in the npm ecosystem. The issue involves n8n has stored cross-site scripting via markdown rendering in workflow ui. Remediation is available by upgrading affected packages to version 2.2.1, 1.123.9.

CVE-2026-25054 at a Glance

CVE Identifier CVE-2026-25054

GHSA Identifier GHSA-qpq4-pw7f-pp8w

Severity HIGH

CVSS v3.1 Base Score N/A

CWE Classification CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Affected Product N8n

Package Ecosystem npm

Published Date 2026-02-04

Last Updated 2026-02-04

How to Fix CVE-2026-25054

To remediate this vulnerability, upgrade all affected N8n dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

n8n fixed: 2.2.1

npm install n8n@2.2.1

n8n fixed: 1.123.9

npm install n8n@1.123.9

Verify Direct and Transitive Dependencies

Run the following command in your project directory to verify that all resolved dependencies use the patched release:

npm ls n8n

How to Check if You Are Affected

To determine whether your Node.js application is affected by CVE-2026-25054, inspect your project dependencies using npm:

npm ls n8n

Analyze the terminal output to locate any version of N8n in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 2.2.1), your application is affected.

Note: The npm ls n8n command inspects dependencies declared in your package.json and lockfile; it does not perform automated runtime dynamic scanning.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting'), where the product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. In N8n, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.

Source Advisory Statement

## Impact 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. ## Patches The issue has been fixed in n8n versions 2.2.1 and 1.123.9. Users should upgrade to these versions or later to remediate the vulnerability. ## Workarounds If upgrading is not immediately possible, administrators should consider the following temporary mitigations: - Limit workflow creation and editing permissions to fully trusted users only. - Review existing workflows for potentially malicious markdown content in sticky notes and other components. - Educate users about the risks of opening workflows from untrusted sources. These workarounds do not fully remediate the risk and should only be used as short-term mitigation measures. --- n8n has adopted CVSS 4.0 as primary score for all security advisories. CVSS 3.1 vector strings are provided for backward compatibility. CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:N

CVE-2026-25054 Affected N8n Versions

2 component(s)

Fixed Versions:

2.2.11.123.9

Product / Package	Ecosystem	Affected Versions	Fixed Version
n8n npm/n8n	npm	≥ 2.0.0 < 2.2.1	2.2.1
n8n npm/n8n	npm	< 1.123.9	1.123.9

References

GitHub Advisory / Wiki ADVISORY

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

NVD — CVE-2026-25054 NVD

https://nvd.nist.gov/vuln/detail/CVE-2026-25054

N8n Source Repository REPOSITORY

https://github.com/n8n-io/n8n

Frequently Asked Questions

What is CVE-2026-25054?

CVE-2026-25054 is a security vulnerability in N8n involving n8n Has Stored Cross-site Scripting via Markdown Rendering in Workflow UI under CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting').

Which N8n versions are affected?

Affected versions include releases prior to 2.2.1, 1.123.9 across affected packages: n8n.

What version fixes CVE-2026-25054?

Upgrading to 2.2.1, 1.123.9 (or the latest patched release for your respective branch) resolves the vulnerability.

Is n8n affected?

Yes, n8n is affected in releases prior to 2.2.1, 1.123.9. Upgrade your dependency to 2.2.1, 1.123.9 or later.

What CWE is associated with CVE-2026-25054?

CVE-2026-25054 is classified under CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') (The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.).

How can I check npm dependencies for CVE-2026-25054?

Run the dependency tree command: 'npm ls n8n'. This command lists direct and transitive dependencies in your build configuration so you can verify if a vulnerable version is resolved.

Machine-readable OSV JSON OSV v1.5 Schema

Normalized schema output

View Raw JSON

{
  "schema_version" : "1.4.0",
  "id" : "GHSA-qpq4-pw7f-pp8w",
  "modified" : "2026-02-04T19:35:20Z",
  "published" : "2026-02-04T19:35:20Z",
  "aliases" : [ "CVE-2026-25054" ],
  "summary" : "n8n Has Stored Cross-site Scripting via Markdown Rendering in Workflow UI",
  "details" : "## Impact\nA 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.\n\nAn 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.\n\n## Patches\nThe issue has been fixed in n8n versions 2.2.1 and 1.123.9. Users should upgrade to these versions or later to remediate the vulnerability.\n\n## Workarounds\nIf upgrading is not immediately possible, administrators should consider the following temporary mitigations:\n- Limit workflow creation and editing permissions to fully trusted users only.\n- Review existing workflows for potentially malicious markdown content in sticky notes and other components.\n- Educate users about the risks of opening workflows from untrusted sources.\nThese workarounds do not fully remediate the risk and should only be used as short-term mitigation measures.\n\n---\nn8n has adopted CVSS 4.0 as primary score for all security advisories. CVSS 3.1 vector strings are provided for backward compatibility.\n\nCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:N",
  "severity" : [ {
    "type" : "CVSS_V4",
    "score" : "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"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "npm",
      "name" : "n8n"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "2.0.0"
      }, {
        "fixed" : "2.2.1"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "npm",
      "name" : "n8n"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "1.123.9"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/n8n-io/n8n/security/advisories/GHSA-qpq4-pw7f-pp8w"
  }, {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-25054"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/n8n-io/n8n"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-79" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2026-02-04T19:35:20Z",
    "nvd_published_at" : "2026-02-04T17:16:23Z"
  }
}

CVSS V4

N/A HIGH

Attack Vector N/A

Attack Complexity N/A

Privileges Required N/A

User Interaction N/A

Scope N/A

Confidentiality N/A

Integrity N/A

Availability N/A

Vector String

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

Advisory Metadata

Source ID: GHSA-qpq4-pw7f-pp8w
Schema Version: 1.4.0
Published: 2026-02-04 19:35
Last Modified: 2026-02-04 19:35
Database Record File: advisories/github-reviewed/2026/02/GHSA-qpq4-pw7f-pp8w/GHSA-qpq4-pw7f-pp8w.json