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CVE-2026-73042— SiYuan before v3.7.4 Remote Code Execution via Menu Metadata

Quick assessment

Affected
siyuan-note siyuan
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

SiYuan是SiYuan团队开源的一款文档管理软件。 SiYuan 3.7.4之前版本存在跨站脚本漏洞，该漏洞源于HTML插值中的数据库菜单元数据转义不当，可能导致存储值在用户打开分组、视图或字段编辑菜单时执行脚本，攻击者可通过字段描述或名称注入标记并利用事件处理程序执行任意代码。

CVSS 9.0 · Critical EPSS 0.30% · P23

Affected Version Matrix 2

VendorProduct Version RangeStatus
siyuan-note siyuan < 3.7.4 affected
3.7.4 unaffected
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I. Basic Information for CVE-2026-73042

Vulnerability Information
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Vulnerability Title
SiYuan before v3.7.4 Remote Code Execution via Menu Metadata
Source: CVE Program / CVE List V5
Vulnerability Description
SiYuan before v3.7.4 fails to properly escape database menu metadata in HTML interpolation, allowing stored values to execute script when users open group, view, or field-edit menus. Attackers can inject markup through field descriptions or names that close containing elements and execute arbitrary code via event handlers, reaching Node built-ins due to Electron's insecure configuration.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H
Source: CVE Program / CVE List V5
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: CVE Program / CVE List V5
Vulnerability Title
SiYuan 跨站脚本漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
SiYuan是SiYuan团队开源的一款文档管理软件。 SiYuan 3.7.4之前版本存在跨站脚本漏洞，该漏洞源于HTML插值中的数据库菜单元数据转义不当，可能导致存储值在用户打开分组、视图或字段编辑菜单时执行脚本，攻击者可通过字段描述或名称注入标记并利用事件处理程序执行任意代码。
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 0 ~ 3.7.4 -

II. Public POCs for CVE-2026-73042

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III. Intelligence Information for CVE-2026-73042

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Vendor Advisories for CVE-2026-73042 (2)

Same Patch Batch · siyuan-note · 2026-08-15 · 11 CVEs total

CVE-2026-73046 9.8 CRITICAL SiYuan before v3.7.4 Authentication Bypass via HTTP Basic Auth
CVE-2026-73050 9.0 CRITICAL SiYuan before v3.7.4 Stored XSS via select option color
CVE-2026-73043 9.0 CRITICAL SiYuan before v3.7.4 Remote Code Execution via Template Calculation
CVE-2026-73041 9.0 CRITICAL SiYuan before v3.7.4 Remote Code Execution via PDF Annotations
CVE-2026-73044 9.0 CRITICAL SiYuan before v3.7.4 Stored Cross-Site Scripting via Column Width
CVE-2026-73053 9.0 CRITICAL SiYuan before v3.7.4 Cross-Site Scripting via unicode2Emoji
CVE-2026-73052 9.0 CRITICAL SiYuan before v3.7.4 Stored XSS via Attribute-View Field Names
CVE-2026-73045 7.5 HIGH SiYuan before 3.7.4 Brute-Force via authFilePublishAccess
CVE-2026-73054 7.5 HIGH SiYuan before v3.7.4 Authentication Bypass via WebSocket
CVE-2026-73047 6.2 MEDIUM siyuan before v3.7.4 Server-Side Template Injection via attribute-view

IV. Related Vulnerabilities

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

V. Comments for CVE-2026-73042

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