CVE-2026-44791: CWE-1321: Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution') in n8n-io n8n
n8n is an open source workflow automation platform. Prior to 1.123.43, 2.22.1, and 2.20.7, an authenticated user with permission to create or modify workflows could bypass the patch for CVE-2026-42232 in the XML node. When combined with other nodes, this could lead to RCE on the n8n host. This vulnerability is fixed in 1.123.43, 2.22.1, and 2.20.7.
AI Analysis
Technical Summary
This vulnerability in n8n (CWE-1321) allows an authenticated user with permission to create or modify workflows to bypass the patch for CVE-2026-42232 in the XML node, resulting in prototype pollution. When exploited in conjunction with other nodes, this can lead to remote code execution on the n8n host. The vulnerability affects versions prior to 1.123.43, 2.22.1, and 2.20.7, where it has been fixed.
Potential Impact
An attacker with authenticated access and workflow modification permissions can exploit this vulnerability to achieve remote code execution on the host running n8n. This could lead to full compromise of the affected system. The CVSS 4.0 score of 9.4 reflects the critical nature of this vulnerability with network attack vector, low attack complexity, no user interaction, and high impact on confidentiality, integrity, availability, and security requirements.
Mitigation Recommendations
Upgrade n8n to version 1.123.43, 2.22.1, or 2.20.7 or later, where this vulnerability has been fixed. No other mitigation or workaround is indicated. Patch status is confirmed fixed in these versions.
CVE-2026-44791: CWE-1321: Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution') in n8n-io n8n
Description
n8n is an open source workflow automation platform. Prior to 1.123.43, 2.22.1, and 2.20.7, an authenticated user with permission to create or modify workflows could bypass the patch for CVE-2026-42232 in the XML node. When combined with other nodes, this could lead to RCE on the n8n host. This vulnerability is fixed in 1.123.43, 2.22.1, and 2.20.7.
CVSS v4.0
Score 9.4critical
Affected software
pkg:github/n8n-io/n8nRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability in n8n (CWE-1321) allows an authenticated user with permission to create or modify workflows to bypass the patch for CVE-2026-42232 in the XML node, resulting in prototype pollution. When exploited in conjunction with other nodes, this can lead to remote code execution on the n8n host. The vulnerability affects versions prior to 1.123.43, 2.22.1, and 2.20.7, where it has been fixed.
Potential Impact
An attacker with authenticated access and workflow modification permissions can exploit this vulnerability to achieve remote code execution on the host running n8n. This could lead to full compromise of the affected system. The CVSS 4.0 score of 9.4 reflects the critical nature of this vulnerability with network attack vector, low attack complexity, no user interaction, and high impact on confidentiality, integrity, availability, and security requirements.
Mitigation Recommendations
Upgrade n8n to version 1.123.43, 2.22.1, or 2.20.7 or later, where this vulnerability has been fixed. No other mitigation or workaround is indicated. Patch status is confirmed fixed in these versions.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- GitHub_M
- Date Reserved
- 2026-05-07T19:20:44.692Z
- Cvss Version
- 4.0
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a3ab6d8eed863c81e4f9951
Added to database: 06/23/2026, 16:39:52 UTC
Last enriched: 06/23/2026, 17:09:13 UTC
Last updated: 06/23/2026, 17:39:59 UTC
Views: 2
Community Reviews
0 reviewsCrowdsource mitigation strategies, share intel context, and vote on the most helpful responses. Sign in to add your voice and help keep defenders ahead.
Want to contribute mitigation steps or threat intel context? Sign in or create an account to join the community discussion.
Actions
Updates to AI analysis require Pro Console access. Upgrade inside Console → Billing.
External Links
Need more coverage?
Upgrade to Pro Console for AI refresh and higher limits.
For incident response and remediation, OffSeq services can help resolve threats faster.
Latest Threats
Check if your credentials are on the dark web
Instant breach scanning across billions of leaked records. Free tier available.