CVE-2026-33669— SiYuan has Arbitrary Document Reading within the Publishing Service
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 3.6.2之前版本存在缓冲区错误漏洞，该漏洞源于通过/api/file/readDir接口检索文档ID，可能导致信息泄露。
Possible ATT&CK Techniques 1 AI
T1083 · File and Directory Discovery
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I. Basic Information for CVE-2026-33669
Vulnerability Information
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Vulnerability Title
SiYuan has Arbitrary Document Reading within the Publishing Service
Source: CVE Program / CVE List V5
Vulnerability Description
SiYuan is a personal knowledge management system. Prior to version 3.6.2, document IDs were retrieved via the /api/file/readDir interface, and then the /api/block/getChildBlocks interface was used to view the content of all documents. Version 3.6.2 patches the issue.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
跨界内存读
Source: CVE Program / CVE List V5
Vulnerability Title
SiYuan 缓冲区错误漏洞
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之前版本存在缓冲区错误漏洞，该漏洞源于通过/api/file/readDir接口检索文档ID，可能导致信息泄露。
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)
Shenlong Deep Dive — AI Deep Analysis
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Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| siyuan-note | siyuan | < 3.6.2 | - |
|
II. Public POCs for CVE-2026-33669
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POC
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Vendor Advisories for CVE-2026-33669 (1)
IV. Related Vulnerabilities
Same product: siyuan
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CVE-2026-109310
SiYuan v3.1.12 before v3.8.6 Denial of Service via getDynami -
CVE-2026-109309
SiYuan v3.7.0 before v3.8.6 Arbitrary File Read via Plugin R -
CVE-2026-105205
SiYuan before 3.8.5 Information Disclosure via /api/block/ge -
CVE-2026-104410
SiYuan before 3.8.5 Information Disclosure via /api/export/p -
CVE-2026-103762
SiYuan before v3.8.5 Missing Authorization in Save-Path Reso
Same vendor: siyuan-note
-
CVE-2026-109310
SiYuan v3.1.12 before v3.8.6 Denial of Service via getDynami -
CVE-2026-109309
SiYuan v3.7.0 before v3.8.6 Arbitrary File Read via Plugin R -
CVE-2026-105205
SiYuan before 3.8.5 Information Disclosure via /api/block/ge -
CVE-2026-104410
SiYuan before 3.8.5 Information Disclosure via /api/export/p -
CVE-2026-103763
SiYuan before v3.8.5 Information Disclosure via /api/noteboo
Same weakness: CWE-125
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V. Comments for CVE-2026-33669
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