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.
Advisories

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Fixes

Solution

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Workaround

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History

Thu, 29 Oct 2026 15:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Sun, 18 Oct 2026 14:30:00 +0000

Type Values Removed Values Added
First Time appeared Vnotex
Vnotex vnote
Vendors & Products Vnotex
Vnotex vnote

Tue, 13 Oct 2026 19:30:00 +0000

Type Values Removed Values Added
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.
Title VNote: Stored XSS via YAML Frontmatter Leading to Local File Read and Remote Exfiltration
Weaknesses CWE-79
References
Metrics cvssV3_1

{'score': 8.2, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:L/A:N'}


Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published:

Updated: 2026-10-29T14:44:07.158Z

Reserved: 2026-09-04T19:23:40.691Z

Link: CVE-2026-86016

cve-icon Vulnrichment

Updated: 2026-10-29T14:43:45.476Z

cve-icon NVD

Status : Deferred

Published: 2026-10-13T20:18:55.303

Modified: 2026-10-29T15:17:25.207

Link: CVE-2026-86016

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-10-18T14:15:14Z

Weaknesses