n8n: XML Node Prototype Pollution Patch Bypass
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.
Problem Types
| Type | CWE ID | Description |
|---|
| CWE | CWE-1321 | CWE-1321: Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution') |
Type: CWE
Description: CWE-1321: Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')
Metrics
| Version | Base score | Base severity | Vector |
|---|
| 4.0 | 9.4 | CRITICAL | CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H |
Version: 4.0
Base score: 9.4
Base severity: CRITICAL
Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H