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CVE-2026-42232

CRITICAL

n8n has XML Node Prototype Pollution that to RCE

Published April 29, 2026Updated May 8, 2026Source: osv

Summary

## Impact An authenticated user with permission to create or modify workflows could achieve global prototype pollution via the XML Node leading to RCE when combined with other nodes exploiting the prototype pollution. ## Patches The issue has been fixed in n8n versions 1.123.32, 2.17.4, and 2.18.1. Users should upgrade to one of 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. - Disable the XML node by adding `n8n-nodes-base.xml` to the `NODES_EXCLUDE` environment variable. These workarounds do not fully remediate the risk and should only be used as short-term mitigation measures.

Remediation

Upgrade to the fixed version using your package manager.

npm
Update n8n to 2.18.1 or later
npm install n8n@2.18.1
npm
Update n8n to 1.123.32 or later
npm install n8n@1.123.32
npm
Update n8n to 2.17.4 or later
npm install n8n@2.17.4

After upgrading, run your dependency scanner again to confirm the vulnerability is resolved.

Affected Packages (3)

PackageEcosystemAffectedFixed In
n8n
npm
All versions2.18.1
n8n
npm
All versions1.123.32
n8n
npm
All versions2.17.4

Vulnerability Classification

Common Weakness Enumeration (CWE) identifiers for this vulnerability type.

  • CWE-1321
    Prototype PollutionMITRE

CVSS Score Breakdown

What the CVSS (Common Vulnerability Scoring System) 9.9 score means for each attack dimension.

Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Changed
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

References

Frequently Asked Questions

What is CVE-2026-42232?
n8n has XML Node Prototype Pollution that to RCE This vulnerability has been assigned a severity rating of CRITICAL (CVSS score: 9.9/10).
How do I check if my project is affected by CVE-2026-42232?
CVE-2026-42232 affects n8n. Use GeekWala's free vulnerability scanner to check your dependencies against CVE-2026-42232 and 200,000+ other known vulnerabilities.

Severity & Exploitability

CVSS Score
9.9

Exploitation is straightforward and causes maximum impact. Patch immediately.

Also Known As

GHSA-hqr4-h3xv-9m3r

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