Prototype Pollution Vulnerability in n8n Workflow Automation Platform
CVE-2026-44789

9.4CRITICAL

Key Information:

Vendor

N8n-io

Status
N8n
Vendor
CVE Published:
23 June 2026

What is CVE-2026-44789?

An authenticated user with permissions to create or modify workflows in n8n prior to versions 1.123.43, 2.22.1, and 2.20.7 could exploit an unvalidated pagination parameter within the HTTP Request node to perform global prototype pollution. This vulnerability poses a risk of remote code execution (RCE) when combined with other attack vectors, potentially compromising the integrity of the n8n instance.

Affected Version(s)

n8n < 1.123.43 < 1.123.43

n8n >= 2.0.0-rc.0, < 2.20.7 < 2.0.0-rc.0, 2.20.7

n8n >= 2.21.0, < 2.21.1 < 2.21.0, 2.21.1

References

https://github.com/n8n-io/n8n/security/advisories/GHSA-c8...
x_refsource_CONFIRM

CVSS V4

Score:
9.4
Severity:
CRITICAL
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.