CVE-2026-50551: Siyuan-Note Siyuan

Critical severity, CVSS 9.9. EPSS: 0.8% chance of exploitation in the next 30 days.

SiYuan is an open-source personal knowledge management system. Prior to 3.7.0, SiYuan contains a stored cross-site scripting (XSS) vulnerability in the Attribute View (database) asset cell renderer that escalates to remote code execution (RCE) in the Electron desktop client. This vulnerability is fixed in 3.7.0.

Affected products

• Siyuan-Note Siyuan: before 3.7.0 (fixed in 3.7.0)

Published 2026-06-24. Last modified 2026-06-25.