Vulnerability · Published Jun 23, 2026 · Assigned by GitHub_M

CVE-2026-44791n8n: XML Node Prototype Pollution Patch Bypass

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 45% 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 54.6% 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 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.

Affected packages & fixed versions

Ecosystem	Package	Fixed in	Advisory
npm	n8n	1.123.43	GHSA-wrwr-h859-xh2r
npm	n8n	2.22.1	GHSA-wrwr-h859-xh2r
npm	n8n	2.20.7	GHSA-wrwr-h859-xh2r

Affected products (as reported)

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

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:H

References

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