CVE-2026-42232 PUBLISHED

n8n: XML Node Prototype Pollution to RCE

Assigner: GitHub_M
Reserved: 25.04.2026 Published: 04.05.2026 Updated: 05.05.2026

n8n is an open source workflow automation platform. Prior to versions 1.123.32, 2.17.4, and 2.18.1, 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. This issue has been patched in versions 1.123.32, 2.17.4, and 2.18.1.

Metrics

CVSS 4.0

CVSS 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:L
CVSS Score: 9.4

Exploitability Metrics		Vulnerable System Impact Metrics		Subsequent System Impact Metrics
Attack Vector	Network	Confidentiality	High	Confidentiality	High
Attack Complexity	Low	Integrity	High	Integrity	High
Attack Requirements	None	Availability	High	Availability	Low
Privileges Required	Low
User Interaction	None

CVSS 4.0

Product Status

Vendor	n8n-io
Product	n8n
Versions	Version < 1.123.32 is affected Version >= 2.17.0, < 2.17.4 is affected Version >= 2.18.0, < 2.18.1 is affected

References

https://github.com/n8n-io/n8n/security/advisories/GHSA-hqr4-h3xv-9m3r

Problem Types

CWE-1321: Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution') CWE