CVE-2026-86016: CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in vnotex vnote
Description
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.
CVSS v3.1
Score 8.2high
Affected software
vnotex
vnote
Weaknesses
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- GitHub_M
- Date Reserved
- 2026-09-04T19:23:40.691Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 6ace881c2cdf04f656a2352b
Added to database: 10/13/2026, 19:35:56 UTC
Last updated: 10/13/2026, 19:35:56 UTC
Views: 1
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