CVE-2026-42232

n8n: XML Node Prototype Pollution to RCE

State: Published
Severity: 9.4 Critical
Published: May 4, 2026
Updated: May 5, 2026
Reserved: Apr 25, 2026

Description

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.

Scores

CVSS	Score	Vector	Source
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:L	GitHub_M

Weaknesses

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

Affected Products

Product	Versions
n8nn8n-io	< 1.123.32Affected >= 2.17.0, < 2.17.4Affected >= 2.18.0, < 2.18.1Affected

References

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

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