CVE-2026-44791 PUBLISHED

n8n: XML Node Prototype Pollution Patch Bypass

Assigner: GitHub_M
Reserved: 07.05.2026 Published: 23.06.2026 Updated: 23.06.2026

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.

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:H
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	High
Privileges Required	Low
User Interaction	None

CVSS 4.0

Product Status

Vendor	n8n-io
Product	n8n
Versions	Version < 1.123.43 is affected Version >= 2.0.0-rc.0, < 2.20.7 is affected Version >= 2.21.0, < 2.21.1 is affected

References

https://github.com/n8n-io/n8n/security/advisories/GHSA-wrwr-h859-xh2r

Problem Types

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