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CVE-2026-33067— SiYuan has Stored XSS to RCE via Unsanitized Bazaar Package 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开源的一个隐私至上的个人知识管理系统。 SiYuan 3.6.0及之前版本存在安全漏洞，该漏洞源于package元数据字段未进行HTML转义，可能导致跨站脚本攻击和远程代码执行。

AI Predicted 9.8 Difficulty: Trivial EPSS 0.55% · P44
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I. Basic Information for CVE-2026-33067

Vulnerability Information
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Vulnerability Title
SiYuan has Stored XSS to RCE via Unsanitized Bazaar Package Metadata
Source: CVE Program / CVE List V5
Vulnerability Description
SiYuan is a personal knowledge management system. Versions 3.6.0 and below render package metadata fields (displayName, description) using template literals without HTML escaping. A malicious package author can inject arbitrary HTML/JavaScript into these fields, which executes automatically when any user browses the Bazaar page. Because SiYuan's Electron configuration enables nodeIntegration: true with contextIsolation: false, this XSS escalates directly to full Remote Code Execution on the victim's operating system — with zero user interaction beyond opening the marketplace tab. This issue has been fixed in version 3.6.1.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N
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 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
SiYuan是SiYuan开源的一个隐私至上的个人知识管理系统。 SiYuan 3.6.0及之前版本存在安全漏洞，该漏洞源于package元数据字段未进行HTML转义，可能导致跨站脚本攻击和远程代码执行。
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 < 3.6.1 -

II. Public POCs for CVE-2026-33067

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III. Intelligence Information for CVE-2026-33067

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Vendor Advisories for CVE-2026-33067 (1)

Same Patch Batch · siyuan-note · 2026-03-20 · 8 CVEs total

CVE-2026-32938 9.9 CRITICAL SiYuan has an Arbitrary File Read in its Desktop Publish Service
CVE-2026-32767 9.8 CRITICAL SiYuan: Authorization Bypass Allows Arbitrary SQL Execution via Search API
CVE-2026-32940 9.3 CRITICAL SiYuan has a SanitizeSVG bypass via data:text/xml in getDynamicIcon (incomplete fix for CV
CVE-2026-33203 7.5 HIGH SiYuan has an Unauthenticated WebSocket DoS via Auth Keepalive Bypass
CVE-2026-33476 7.5 HIGH SiYuan has an Unauthenticated Arbitrary File Read via Path Traversal
CVE-2026-33194 6.8 MEDIUM SiYuan has an Incomplete Fix for IsSensitivePath Denylist Allows File Read from /opt, /usr
CVE-2026-33066 SiYuan has Stored XSS to RCE via Unsanitized Bazaar README Rendering

IV. Related Vulnerabilities

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

V. Comments for CVE-2026-33067

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