---
id: CVE-2026-86016
title: VNote is a note-taking platform
summary: >-
  VNote is a note-taking platform. Prior to 4.3.0, VNote uses the assignment
  `preNode.innerHTML = p_metaData` in src/data/extra/web/js/markdownit.js to
  insert YAML frontmatter metadata into a pre element before the protectFromXss
  sanitizat…
severity: high
cvss: 8.2
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:L/A:N'
cwe:
  - CWE-79
published: '2026-10-13'
updated: '2026-10-13'
sourceUpdated: '2026-10-13T20:18:55.303'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-86016'
references:
  - url: >-
      https://github.com/vnotex/vnote/commit/7371efde531312eb24beb982fb5fdd73469cb171
    label: security-advisories@github.com
  - url: 'https://github.com/vnotex/vnote/releases/tag/v4.3.0'
    label: security-advisories@github.com
  - url: 'https://github.com/vnotex/vnote/security/advisories/GHSA-vfhj-c636-h59x'
    label: security-advisories@github.com
tags:
  - nvd
ingestedAt: '2026-10-13T20:53:44.647Z'
---

## Overview

VNote is a note-taking platform. Prior to 4.3.0, VNote uses the assignment `preNode.innerHTML = p_metaData` in src/data/extra/web/js/markdownit.js to insert YAML frontmatter metadata into a pre element before the protectFromXss sanitization path runs. Opening an attacker-supplied Markdown note can therefore execute stored JavaScript in the file:// viewer context. Because QWebEngineSettings::LocalContentCanAccessRemoteUrls enables local content to access remote URLs, the script can read reachable local note files and transmit their contents to a remote server without further interaction after the note is opened. This issue is fixed in version 4.3.0.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.