CVE-2026-42232: CWE-1321: Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution') in n8n-io n8n
CVE-2026-42232 is a critical prototype pollution vulnerability in the open source workflow automation platform n8n. It affects versions prior to 1.123.32, 2.17.4, and 2.18.1. An authenticated user with permission to create or modify workflows can exploit the XML Node to achieve global prototype pollution, which can lead to remote code execution when combined with other nodes. This vulnerability has been patched in versions 1.
AI Analysis
Technical Summary
The vulnerability CVE-2026-42232 in n8n-io's n8n platform allows an authenticated user with workflow modification permissions to perform global prototype pollution via the XML Node. This improper control of object prototype attributes (CWE-1321) can lead to remote code execution when combined with other nodes that exploit the polluted prototype. The issue affects versions before 1.123.32, 2.17.4, and 2.18.1 and has been addressed by patches in these versions. The CVSS 4.0 vector indicates network attack vector, low attack complexity, no user interaction, and high impacts on confidentiality, integrity, availability, and security requirements. The vulnerability is critical and requires patching to remediate.
Potential Impact
Successful exploitation allows an authenticated user with workflow creation or modification permissions to achieve global prototype pollution, potentially leading to remote code execution. This can compromise the confidentiality, integrity, and availability of the affected system. No public exploits are known at this time.
Mitigation Recommendations
This vulnerability has been patched in n8n versions 1.123.32, 2.17.4, and 2.18.1. Users should upgrade to these or later versions to remediate the issue. Since this is not a cloud service, remediation requires applying these vendor-provided patches. Patch status is confirmed by the vendor advisory embedded in the CVE description.
CVE-2026-42232: CWE-1321: Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution') in n8n-io n8n
Description
CVE-2026-42232 is a critical prototype pollution vulnerability in the open source workflow automation platform n8n. It affects versions prior to 1.123.32, 2.17.4, and 2.18.1. An authenticated user with permission to create or modify workflows can exploit the XML Node to achieve global prototype pollution, which can lead to remote code execution when combined with other nodes. This vulnerability has been patched in versions 1.
CVSS v4.0
Score 9.4critical
Affected software
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The vulnerability CVE-2026-42232 in n8n-io's n8n platform allows an authenticated user with workflow modification permissions to perform global prototype pollution via the XML Node. This improper control of object prototype attributes (CWE-1321) can lead to remote code execution when combined with other nodes that exploit the polluted prototype. The issue affects versions before 1.123.32, 2.17.4, and 2.18.1 and has been addressed by patches in these versions. The CVSS 4.0 vector indicates network attack vector, low attack complexity, no user interaction, and high impacts on confidentiality, integrity, availability, and security requirements. The vulnerability is critical and requires patching to remediate.
Potential Impact
Successful exploitation allows an authenticated user with workflow creation or modification permissions to achieve global prototype pollution, potentially leading to remote code execution. This can compromise the confidentiality, integrity, and availability of the affected system. No public exploits are known at this time.
Mitigation Recommendations
This vulnerability has been patched in n8n versions 1.123.32, 2.17.4, and 2.18.1. Users should upgrade to these or later versions to remediate the issue. Since this is not a cloud service, remediation requires applying these vendor-provided patches. Patch status is confirmed by the vendor advisory embedded in the CVE description.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- GitHub_M
- Date Reserved
- 2026-04-25T05:37:12.117Z
- Cvss Version
- 4.0
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 69f8eaaecbff5d8610415aff
Added to database: 5/4/2026, 6:51:26 PM
Last enriched: 5/12/2026, 6:30:51 AM
Last updated: 6/19/2026, 2:19:29 AM
Views: 83
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