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CVE-2026-44670— SiYuan: Stored XSS via Attribute View name to Electron renderer RCE in SiYuan

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，该漏洞源于内核存储属性视图名称时未进行HTML转义，导致HTML注入并最终实现Node.js代码执行。

AI Predicted 9.8 Difficulty: Easy EPSS 0.55% · P45

Affected Version Matrix 1

VendorProduct Version RangeStatus
siyuan-note siyuan < 3.7.0 affected
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I. Basic Information for CVE-2026-44670

Vulnerability Information
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Vulnerability Title
SiYuan: Stored XSS via Attribute View name to Electron renderer RCE in SiYuan
Source: CVE Program / CVE List V5
Vulnerability Description
SiYuan is an open-source personal knowledge management system. Prior to 3.7.0, the kernel stores Attribute View (AV / database) names without any HTML escape, then a render template uses raw strings.ReplaceAll(tpl, "${avName}", nodeAvName) to embed the name in HTML before pushing to all clients via WebSocket. Three independent client paths (render.ts:120 → outerHTML, Title.ts:401 → innerHTML, transaction.ts:559 → innerHTML) consume the value without escaping. Because the main BrowserWindow runs nodeIntegration:true, contextIsolation:false, webSecurity:false (app/electron/main.js:407-411), HTML injection in the renderer becomes Node.js code execution. This vulnerability is fixed in 3.7.0.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:H/SI:H/SA: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，该漏洞源于内核存储属性视图名称时未进行HTML转义，导致HTML注入并最终实现Node.js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 < 3.7.0 -

II. Public POCs for CVE-2026-44670

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III. Intelligence Information for CVE-2026-44670

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Vendor Advisories for CVE-2026-44670 (1)

Same Patch Batch · siyuan-note · 2026-05-14 · 7 CVEs total

CVE-2026-45375 9.0 CRITICAL SiYuan: Bazaar marketplace renders unescaped package `name` and `version` metadata, allowi
CVE-2026-44586 8.3 HIGH SiYuan: Bazaar marketplace renders unescaped package author metadata, allowing XSS and Ele
CVE-2026-45147 4.3 MEDIUM SiYuan: Broken access control in SiYuan `/api/tag/getTag` — Reader role can mutate `Conf.T
CVE-2026-45148 4.3 MEDIUM SiYuan: Broken access control in SiYuan publish-mode Readers can enumerate metadata
CVE-2026-45371 SiYuan: SiYuan publish-mode Reader can mutate Conf and SQL index via 8 ungated APIs
CVE-2026-44588 SiYuan: URL-encoded title bypasses `escapeAriaLabel`, decoded by `decodeURIComponent` into

IV. Related Vulnerabilities

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

V. Comments for CVE-2026-44670

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