CVE-2026-33476— SiYuan has an Unauthenticated Arbitrary File Read via Path Traversal
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I. Basic Information for CVE-2026-33476
Vulnerability Information
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Vulnerability Title
SiYuan has an Unauthenticated Arbitrary File Read via Path Traversal
Source: NVD (National Vulnerability Database)
Vulnerability Description
SiYuan is a personal knowledge management system. Prior to version 3.6.2, the Siyuan kernel exposes an unauthenticated file-serving endpoint under `/appearance/*filepath.` Due to improper path sanitization, attackers can perform directory traversal and read arbitrary files accessible to the server process. Authentication checks explicitly exclude this endpoint, allowing exploitation without valid credentials. Version 3.6.2 fixes this issue.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Source: NVD (National Vulnerability Database)
Vulnerability Type
对路径名的限制不恰当(路径遍历)
Source: NVD (National Vulnerability Database)
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 3.6.2之前版本存在安全漏洞，该漏洞源于/appearance/*filepath端点路径清理不当，可能导致目录遍历和任意文件读取。
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 | < 3.6.2 | - |
II. Public POCs for CVE-2026-33476
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|---|
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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-2026-33194 | 6.8 MEDIUM | SiYuan has an Incomplete Fix for IsSensitivePath Denylist Allows File Read from /opt, /usr |
| CVE-2026-33067 | SiYuan has Stored XSS to RCE via Unsanitized Bazaar Package Metadata | |
| CVE-2026-33066 | SiYuan has Stored XSS to RCE via Unsanitized Bazaar README Rendering |
IV. Related Vulnerabilities
Same product: siyuan
- CVE-2026-41894
SiYuan: Incomplete Fix Bypass for CVE-2026-30869: Path Trave - CVE-2026-41421
SiYuan Desktop Notification XSS Leads to Electron RCE - CVE-2026-40922
SiYuan: Incomplete sanitization of bazaar README allows stor - CVE-2026-40322
SiYuan: Mermaid `javascript:` Link Injection Leads to Stored - CVE-2026-40318
SiYuan: Publish Reader Path Traversal Delete via `removeUnus
Same vendor: siyuan-note
- CVE-2026-41894
SiYuan: Incomplete Fix Bypass for CVE-2026-30869: Path Trave - CVE-2026-41421
SiYuan Desktop Notification XSS Leads to Electron RCE - CVE-2026-40922
SiYuan: Incomplete sanitization of bazaar README allows stor - CVE-2026-40322
SiYuan: Mermaid `javascript:` Link Injection Leads to Stored - CVE-2026-40318
SiYuan: Publish Reader Path Traversal Delete via `removeUnus
Same weakness: CWE-22
- CVE-2026-8274
npitre cramfs-tools Directory cramfsck.c do_directory path t - CVE-2022-50956
WordPress Plugin amministrazione-aperta 3.7.3 Local File Rea - CVE-2026-8215
Industrial Application Software IAS Canias ERP RMI iasReques - CVE-2026-42605
AzuraCast: Path Traversal in `currentDirectory` Parameter En - CVE-2026-42574
apko dirFS has a symlink-following path traversal that allow
V. Comments for CVE-2026-33476
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