---
id: GHSA-fmvg-vhqq-r2mj
title: >-
  Duplicate Advisory: Custom Header Credential Values Leaked in Plaintext into
  LLM Node Execution Data
summary: >-
  Duplicate Advisory: Custom Header Credential Values Leaked in Plaintext into
  LLM Node Execution Data
severity: medium
cwe:
  - CWE-532
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-fmvg-vhqq-r2mj'
references:
  - url: 'https://github.com/n8n-io/n8n/security/advisories/GHSA-89gh-3pgc-v5h2'
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2026-65589'
  - url: >-
      https://www.vulncheck.com/advisories/n8n-before-credential-exposure-via-llm-node-execution-data
  - url: 'https://github.com/advisories/GHSA-fmvg-vhqq-r2mj'
tags:
  - ghsa
  - npm
ingestedAt: '2026-07-22T23:07:33.793Z'
---

## Overview

## Duplicate Advisory

This advisory has been withdrawn because it is a duplicate of GHSA-89gh-3pgc-v5h2. This link is maintained to preserve external references.

## Original Description

n8n versions before 1.123.64 fail to properly mask custom HTTP header credentials in LLM sub-node execution data, writing plaintext API keys and secrets to workflow execution records. Authenticated users with access to execution data can read exposed header values and credentials that persist in the database and can be exported.

## Affected packages

- `n8n < 1.123.64`

## Remediation

Refer to the advisory for the patched release.