CVE-2026-44789: 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 achieve global prototype pollution via an unvalidated pagination parameter in the HTTP Request node. Combined with other techniques this could lead to RCE on the instance. This vulnerability is fixed in 1.123.43, 2.22.1, and 2.20.7.
AI Analysis
Technical Summary
CVE-2026-44789 describes a prototype pollution vulnerability in n8n's HTTP Request node. An authenticated user with permission to create or modify workflows can manipulate an unvalidated pagination parameter, resulting in global prototype pollution. This flaw can be leveraged, in combination with other attack methods, to achieve remote code execution on the affected n8n instance. The vulnerability affects versions prior to 1.123.43, 2.22.1, and 2.20.7 and is addressed by updating to these fixed versions.
Potential Impact
Successful exploitation allows an authenticated user with workflow modification rights to perform global prototype pollution, potentially leading to remote code execution on the n8n instance. This can compromise the integrity and security of the affected system, allowing execution of arbitrary code with the privileges of the n8n process.
Mitigation Recommendations
This vulnerability is fixed in n8n versions 1.123.43, 2.22.1, and 2.20.7. Users should upgrade to one of these versions or later to remediate the issue. No additional mitigation steps are indicated by the vendor advisory.
CVE-2026-44789: 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 achieve global prototype pollution via an unvalidated pagination parameter in the HTTP Request node. Combined with other techniques this could lead to RCE on the instance. This vulnerability is fixed in 1.123.43, 2.22.1, and 2.20.7.
CVSS v4.0
Score 9.4critical
Affected software
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Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-44789 describes a prototype pollution vulnerability in n8n's HTTP Request node. An authenticated user with permission to create or modify workflows can manipulate an unvalidated pagination parameter, resulting in global prototype pollution. This flaw can be leveraged, in combination with other attack methods, to achieve remote code execution on the affected n8n instance. The vulnerability affects versions prior to 1.123.43, 2.22.1, and 2.20.7 and is addressed by updating to these fixed versions.
Potential Impact
Successful exploitation allows an authenticated user with workflow modification rights to perform global prototype pollution, potentially leading to remote code execution on the n8n instance. This can compromise the integrity and security of the affected system, allowing execution of arbitrary code with the privileges of the n8n process.
Mitigation Recommendations
This vulnerability is fixed in n8n versions 1.123.43, 2.22.1, and 2.20.7. Users should upgrade to one of these versions or later to remediate the issue. No additional mitigation steps are indicated by the vendor advisory.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- GitHub_M
- Date Reserved
- 2026-05-07T19:20:44.691Z
- Cvss Version
- 4.0
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a3ab6d8eed863c81e4f994b
Added to database: 06/23/2026, 16:39:52 UTC
Last enriched: 06/30/2026, 23:17:48 UTC
Last updated: 08/06/2026, 12:41:10 UTC
Views: 55
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