CVE-2026-39846— SiYuan affected by Remote Code Execution in the Electron desktop client via stored XSS in synced table captions

SiYuan affected by Remote Code Execution in the Electron desktop client via stored XSS in synced table captions

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, creating a stored XSS sink. Because the desktop renderer runs with nodeIntegration enabled and contextIsolation disabled, attacker-controlled JavaScript executes with access to Node.js APIs. In practice, an attacker can import a crafted note into a synced workspace, wait for the victim to sync, and achieve code execution when the victim opens the note. This vulnerability is fixed in 3.6.4.

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H

在Web页面生成时对输入的转义处理不恰当(跨站脚本)

SiYuan 代码注入漏洞

SiYuan是SiYuan开源的一个隐私至上的个人知识管理系统。 SiYuan 3.6.4之前版本存在代码注入漏洞，该漏洞源于表格标题内容存储时未安全转义，可能导致存储型跨站脚本攻击，进而实现远程代码执行。

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