Vulnerability · Published May 4, 2026 · Assigned by GitHub_M

CVE-2026-42232n8n: XML Node Prototype Pollution to RCE

Critical 9.4

In plain English

A critical-severity prototype pollution in n8n from n8n-io. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.5% (higher than 41% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 4.0)9.4Critical

Exploit odds (30 days)0.5%top 58.6% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official 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.

Affected packages & fixed versions

Ecosystem	Package	Fixed in	Advisory
npm	n8n	2.18.1	GHSA-hqr4-h3xv-9m3r
npm	n8n	2.17.4	GHSA-hqr4-h3xv-9m3r
npm	n8n	1.123.32	GHSA-hqr4-h3xv-9m3r

Affected products (as reported)

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

Weakness: CWE-1321 · 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

References

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