CVE-2026-65606
Description
SiYuan before v3.7.2 contains a cross-site scripting vulnerability in the siyuan:// protocol handler. When a siyuan://plugins/<name> link references a name that is not an installed plugin, the application opens a custom tab and inserts the link's icon parameter into the tab header via innerHTML without escaping it (app/src/layout/Tab.ts), allowing injection of an <img onerror=...> element. Because the SiYuan Desktop renderer runs with nodeIntegration:true, the injected JavaScript can access Node's require and call require('child_process').execSync(...), escalating the cross-site scripting into arbitrary operating-system command execution.
How to fix
- siyuan-note siyuan3.7.2 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| siyuan-note siyuan | v < 3.7.2 | 3.7.2 |
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