---
id: GHSA-m7jc-p4hf-xhwq
title: >-
  Duplicate Advisory: Legacy Expression Evaluator Sanitizer Bypass Leads to
  Authenticated Code Execution
summary: >-
  Duplicate Advisory: Legacy Expression Evaluator Sanitizer Bypass Leads to
  Authenticated Code Execution
severity: high
cwe:
  - CWE-917
vendor: n8n
product: n8n
ecosystem: npm
affected:
  - n8n < 1.123.64
published: '2026-07-22'
updated: '2026-07-22'
source: GHSA
sourceUrl: 'https://github.com/advisories/GHSA-m7jc-p4hf-xhwq'
references:
  - url: 'https://github.com/n8n-io/n8n/security/advisories/GHSA-pm35-fqvh-cq5g'
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2026-65591'
  - url: >-
      https://www.vulncheck.com/advisories/n8n-before-sanitizer-bypass-remote-code-execution
  - url: 'https://github.com/advisories/GHSA-m7jc-p4hf-xhwq'
tags:
  - ghsa
  - npm
ingestedAt: '2026-07-22T22:06:58.180Z'
---

## Overview

## Duplicate Advisory

This advisory has been withdrawn because it is a duplicate of GHSA-pm35-fqvh-cq5g. This link is maintained to preserve external references.

## Original Description
n8n contains a sanitizer bypass vulnerability in the legacy expression evaluator's computed-member handler. An authenticated user with workflow create or modify permissions can craft a malicious expression to bypass the sanitizer and achieve host-level code execution as the n8n process. The legacy expression engine is the default in affected versions. Fixed in n8n 1.123.64, 2.29.8, and 2.30.1.

## Affected packages

- `n8n < 1.123.64`

## Remediation

Refer to the advisory for the patched release.