CVE-2026-41421— SiYuan Desktop Notification XSS Leads to Electron RCE
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I. Basic Information for CVE-2026-41421
Vulnerability Information
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Vulnerability Title
SiYuan Desktop Notification XSS Leads to Electron RCE
Source: NVD (National Vulnerability Database)
Vulnerability Description
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 layer, and the frontend inserts it into the DOM with insertAdjacentHTML(...) at message.ts. On desktop builds, this is not limited to ordinary XSS. Electron windows are created with nodeIntegration: true, contextIsolation: false, and webSecurity: false at main.js. As a result, JavaScript executed from the notification sink can directly access Node APIs and escalate to desktop code execution. This vulnerability is fixed in 3.6.5.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Source: NVD (National Vulnerability Database)
Vulnerability Type
OS命令中使用的特殊元素转义处理不恰当(OS命令注入)
Source: NVD (National Vulnerability Database)
Vulnerability Title
SiYuan 操作系统命令注入漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
SiYuan是SiYuan开源的一个个人知识管理系统。 SiYuan 3.6.5之前版本存在操作系统命令注入漏洞，该漏洞源于通知消息以原始HTML渲染，可能导致桌面代码执行。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| siyuan-note | siyuan | < 3.6.5 | - |
II. Public POCs for CVE-2026-41421
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|---|
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IV. Related Vulnerabilities
Same product: siyuan
- CVE-2026-41894
SiYuan: Incomplete Fix Bypass for CVE-2026-30869: Path Trave - CVE-2026-40922
SiYuan: Incomplete sanitization of bazaar README allows stor - CVE-2026-40322
SiYuan: Mermaid `javascript:` Link Injection Leads to Stored - CVE-2026-40318
SiYuan: Publish Reader Path Traversal Delete via `removeUnus - CVE-2026-40259
SiYuan: Publish Reader Can Arbitrarily Delete Attribute View
Same vendor: siyuan-note
- CVE-2026-41894
SiYuan: Incomplete Fix Bypass for CVE-2026-30869: Path Trave - CVE-2026-40922
SiYuan: Incomplete sanitization of bazaar README allows stor - CVE-2026-40322
SiYuan: Mermaid `javascript:` Link Injection Leads to Stored - CVE-2026-40318
SiYuan: Publish Reader Path Traversal Delete via `removeUnus - CVE-2026-40259
SiYuan: Publish Reader Can Arbitrarily Delete Attribute View
Same weakness: CWE-78
- CVE-2026-8273
D-Link DNS-320 system_mgr.cgi cgi_merge_user os command inje - CVE-2026-8272
D-Link DNS-320 webfile_mgr.cgi chown os command injection - CVE-2026-8271
D-Link DNS-320 network_mgr.cgi cgi_upnp_edit os command inje - CVE-2026-8265
Tenda AC6 httpd getLogFile get_log_file os command injection - CVE-2026-8264
Tenda AC6 httpd WifiApScan formWifiApScan os command injecti
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