CVE-2026-86016: high-severity vulnerability in vnotex vnote
VNote: Stored XSS via YAML Frontmatter Leading to Local File Read and Remote Exfiltration
Published · Updated
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21Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 8.2epss 0.3%
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:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:L/A:N
Affected products
vnotex · vnoteRelated CVEs — vnotex vnote
In the same product, most dangerous first.
CVE-2024-41662HIGHVNote vulnerable to Markdown XSS, which leads to RCEEPSS 1.7%CVE-2023-5701MEDIUMvnotex vnote Markdown File cross site scriptingEPSS 0.8%CVE-2024-39904HIGHCode Execution Vulnerability via Local File Path Traversal in VnoteEPSS 0.7%CVE-2026-15505MEDIUMvnotex vnote YAML Frontmatter markdownit.js cross site scriptingEPSS 0.3%CVE-2026-86022HIGHVNote: Argument injection to arbitrary command execution via crafted note filename in external-program handlingEPSS 0.2%