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CVE-2026-50551— SiYuan: Stored XSS to RCE via Unsanitized Attribute View Asset Cell Content

CVSS 9.9 · Critical EPSS 0.44% · P35

Affected Version Matrix 1

VendorProductVersion RangeStatus
siyuan-notesiyuan< 3.7.0affected
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I. Basic Information for CVE-2026-50551

Vulnerability Information
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Vulnerability Title
SiYuan: Stored XSS to RCE via Unsanitized Attribute View Asset Cell Content
Source: NVD (National Vulnerability Database)
Vulnerability Description
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.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Source: NVD (National Vulnerability Database)
Vulnerability Type
在Web页面生成时对输入的转义处理不恰当(跨站脚本)
Source: NVD (National Vulnerability Database)
Vulnerability Title
SiYuan 跨站脚本漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
SiYuan是SiYuan团队开源的一个个人知识管理系统。 SiYuan 3.7.0之前版本存在跨站脚本漏洞，该漏洞源于Attribute View资产单元渲染器存在存储型跨站脚本漏洞，可能导致在Electron桌面客户端中升级为远程代码执行攻击。
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

VendorProductAffected VersionsCPESubscribe
siyuan-notesiyuan < 3.7.0 -

II. Public POCs for CVE-2026-50551

#POC DescriptionSource LinkShenlong Link
AI-Generated POCPremium
Qwen3.6-35B-A3B · 8264 chars
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III. Intelligence Information for CVE-2026-50551

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Vendor Advisories for CVE-2026-50551 (1)

Same Patch Batch · siyuan-note · 2026-06-24 · 9 CVEs total

CVE-2026-541589.9 CRITICALSiYuan: Stored XSS to RCE via attribute-view cell rendering in genAVValueHTML()
CVE-2026-540679.9 CRITICALSiYuan: Stored XSS to RCE via CSS-snippet <style> breakout in renderSnippet()
CVE-2026-555709.0 CRITICALSiYuan: Stored XSS results to Electron RCE in SiYuan marketplace via unescaped `data-obj`
CVE-2026-540667.5 HIGHSiYuan: Path Traversal via Double URL Encoding in /assets/*path (publish mode arbitrary fi
CVE-2026-540707.1 HIGHSiYuan: Stored XSS in Bazaar marketplace via package README event handlers
CVE-2026-540685.9 MEDIUMSiYuan: Unauthenticated SQLite Data Exfiltration via Template Injection in /api/icon/getDy
CVE-2026-54759SiYuan: Lute HTML sanitizer allows `<iframe>` tags in Bazaar package README, leading to ar
CVE-2026-54069SiYuan: Unauthenticated Admin API Access via Blanket chrome-extension:// Origin Allowlist

IV. Related Vulnerabilities

Same product: siyuan
Same vendor: siyuan-note
Same weakness: CWE-79

V. Comments for CVE-2026-50551

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