CVE-2026-41421

SiYuan is an open-source personal knowledge management system. Prior to 3.6.5, SiYuan desktop renders notification messages as raw HTML inside an Electron renderer. The notification route POST /api/notification/pushMsg accepts a user-controlled msg value, forwards it through the backend broadcast...

CVE-2026-41421 SiYuan Desktop Notification XSS Leads to Electron RCE

SiYuan is an open-source personal knowledge management system. Prior to 3.6.5, SiYuan desktop renders notification messages as raw HTML inside an Electron renderer. The notification route POST /api/notification/pushMsg accepts a user-controlled msg value, forwards it through the backend broadcast...

CVE-2026-39846

SiYuan is a personal knowledge management system. Prior to 3.6.4, a malicious note synced to another user can trigger remote code execution in the SiYuan Electron desktop client. The root cause is that table caption content is stored without safe escaping and later unescaped into rendered HTML,...

SiYuan Desktop: Stored XSS in imported .sy.zip content leads to arbitrary command execution

Summary A vulnerability allows crafted block attribute values to bypass server-side attribute escaping when an HTML entity is mixed with raw special characters. An attacker can embed a malicious IAL value inside a .sy document, package it as a .sy.zip, and have the victim import it through the...

GHSA-FF66-236V-P4FG SiYuan Desktop: Stored XSS in imported .sy.zip content leads to arbitrary command execution

Summary A vulnerability allows crafted block attribute values to bypass server-side attribute escaping when an HTML entity is mixed with raw special characters. An attacker can embed a malicious IAL value inside a .sy document, package it as a .sy.zip, and have the victim import it through the...

SiYuan is Vulnerable to Cross-Origin RCE via Permissive CORS Policy and JavaScript Snippet Injection

Summary A malicious website can achieve Remote Code Execution RCE on any desktop running SiYuan by exploiting the permissive CORS policy Access-Control-Allow-Origin: + Access-Control-Allow-Private-Network: true to inject a JavaScript snippet via the API. The injected snippet executes in Electron'...

CVE-2026-32938 SiYuan has an Arbitrary File Read in its Desktop Publish Service

SiYuan is a personal knowledge management system. In versions 3.6.0 and below, the /api/lute/html2BlockDOM on the desktop copies local files pointed to by file:// links in pasted HTML into the workspace assets directory without validating paths against a sensitive-path list. Together with GET...