CVE-2026-41894— SiYuan: Incomplete Fix Bypass for CVE-2026-30869: Path Traversal via Double URL Encoding in `/export/` Endpoint
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I. Basic Information for CVE-2026-41894
Vulnerability Information
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Vulnerability Title
SiYuan: Incomplete Fix Bypass for CVE-2026-30869: Path Traversal via Double URL Encoding in `/export/` Endpoint
Source: NVD (National Vulnerability Database)
Vulnerability Description
SiYuan is an open-source personal knowledge management system. Prior to 3.6.5, the fix for CVE-2026-30869 only added a denylist check (IsSensitivePath) but did not address the root cause — a redundant url.PathUnescape() call in serveExport(). An authenticated attacker can use double URL encoding (%252e%252e) to traverse directories and read arbitrary workspace files including the full SQLite database (siyuan.db), kernel log, and all user documents. This vulnerability is fixed in 3.6.5.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
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 路径遍历漏洞
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 3.6.5之前版本存在路径遍历漏洞，该漏洞源于修复CVE-2026-30869时仅添加黑名单检查但未解决serveExport函数中冗余的url.PathUnescape调用，导致经过身份验证的攻击者使用双重URL编码遍历目录并读取任意工作区文件。
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 | < 3.6.5 | - |
II. Public POCs for CVE-2026-41894
| # | POC Description | Source Link | Shenlong Link |
|---|
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- Release Improve details · siyuan-note/siyuan · GitHubx_refsource_MISC
- https://nvd.nist.gov/vuln/detail/CVE-2026-41894
IV. Related Vulnerabilities
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SiYuan: Mermaid `javascript:` Link Injection Leads to Stored - CVE-2026-40318
SiYuan: Publish Reader Path Traversal Delete via `removeUnus - CVE-2026-40259
SiYuan: Publish Reader Can Arbitrarily Delete Attribute View
Same vendor: siyuan-note
- 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 - CVE-2026-40259
SiYuan: Publish Reader Can Arbitrarily Delete Attribute View
Same weakness: CWE-22
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SmarterTools SmarterMail < Build 9560 Server Local File Incl - CVE-2026-42028
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V. Comments for CVE-2026-41894
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