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CVE-2026-54158— SiYuan: Stored XSS to RCE via attribute-view cell rendering in genAVValueHTML()

Quick assessment

Affected
siyuan-note siyuan
Exploitation
Public or AI PoC available; prioritize validation
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团队的一款文档管理与企业应用软件。 siyuan-note SiYuan 3.7.0之前版本存在配置错误漏洞，该漏洞源于属性视图（数据库）单元格渲染器genAVValueHTML在text、url、phone和mAsset四个分支中直接插入单元格原始内容，可能导致跨站脚本攻击，并进一步在Electron桌面环境中链式导致远程代码执行。

CVSS 9.9 · Critical EPSS 0.51% · P42

Affected Version Matrix 1

VendorProduct Version RangeStatus
siyuan-note siyuan < 3.7.0 affected
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I. Basic Information for CVE-2026-54158

Vulnerability Information
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Vulnerability Title
SiYuan: Stored XSS to RCE via attribute-view cell rendering in genAVValueHTML()
Source: CVE Program / CVE List V5
Vulnerability Description
SiYuan is an open-source personal knowledge management system. Prior to 3.7.0, the attribute-view (database) cell renderer genAVValueHTML interpolates cell content raw in four of its branches: text, url, phone, and mAsset. A cell value like </textarea><img src=x onerror="..."> or "><img src=x onerror="..."> breaks out of its surrounding tag and runs arbitrary JavaScript in the renderer when the victim opens the block-attribute panel. On Electron desktop the renderer runs with nodeIntegration:true, so the XSS chains to host RCE via require('child_process'). AV files live under the workspace and ride normal sync, so an attacker with write access to any synced workspace plants the payload once and it fires on every device that opens a panel containing that row.he kernel doesn't escape on the way in either, so the malicious cell persists byte-for-byte. There's no equivalent of the html.EscapeAttrVal call that protects block IAL attributes at kernel/model/blockial.go:261. This vulnerability is fixed in 3.7.0.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/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-note SiYuan 配置错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
SiYuan是SiYuan团队的一款文档管理与企业应用软件。 siyuan-note SiYuan 3.7.0之前版本存在配置错误漏洞，该漏洞源于属性视图（数据库）单元格渲染器genAVValueHTML在text、url、phone和mAsset四个分支中直接插入单元格原始内容，可能导致跨站脚本攻击，并进一步在Electron桌面环境中链式导致远程代码执行。
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-2026-54158

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Qwen3.6-35B-A3B · 7609 chars
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III. Intelligence Information for CVE-2026-54158

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Vendor Advisories for CVE-2026-54158 (1)

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

CVE-2026-54067 9.9 CRITICAL SiYuan: Stored XSS to RCE via CSS-snippet <style> breakout in renderSnippet()
CVE-2026-50551 9.9 CRITICAL SiYuan: Stored XSS to RCE via Unsanitized Attribute View Asset Cell Content
CVE-2026-55570 9.0 CRITICAL SiYuan: Stored XSS results to Electron RCE in SiYuan marketplace via unescaped `data-obj`
CVE-2026-54066 7.5 HIGH SiYuan: Path Traversal via Double URL Encoding in /assets/*path (publish mode arbitrary fi
CVE-2026-54070 7.1 HIGH SiYuan: Stored XSS in Bazaar marketplace via package README event handlers
CVE-2026-54068 5.9 MEDIUM SiYuan: Unauthenticated SQLite Data Exfiltration via Template Injection in /api/icon/getDy
CVE-2026-54759 SiYuan: Lute HTML sanitizer allows `<iframe>` tags in Bazaar package README, leading to ar
CVE-2026-54069 SiYuan: 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-2026-54158

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