CVE-2026-101091— SiYuan before v3.8.4 SQL Injection via Block Query Embed
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.
思源笔记（SiYuan）v3.8.4 之前的版本在对 siyuan.db 执行的块查询嵌入块（block query embed blocks）中的 SQL 语句缺乏充分的有效性验证。攻击者可以构造恶意的 .sy 文档，其中包含非只读的 SQL 语句。这些语句会在后台执行索引、渲染或导出等操作时自动运行，且无需任何身份认证。
Possible ATT&CK Techniques 1 AI
T1190 · Exploit Public-Facing Application
Get alerts for future matching vulnerabilities
Log in to subscribe
I. Basic Information for CVE-2026-101091
Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗
Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.
Vulnerability Title
SiYuan before v3.8.4 SQL Injection via Block Query Embed
Source: CVE Program / CVE List V5
Vulnerability Description
SiYuan versions before v3.8.4 fail to properly validate SQL statements in block query embed blocks executed against siyuan.db. Attackers can craft malicious .sy documents with non-read-only SQL statements that execute automatically during background indexing, rendering, or export operations without authentication.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
SQL命令中使用的特殊元素转义处理不恰当(SQL注入)
Source: CVE Program / CVE List V5
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| siyuan-note | siyuan | 0 ~ 3.8.4 | - |
|
II. Public POCs for CVE-2026-101091
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POC
Premium
No public POC found.
Login to generate AI POCIII. Intelligence Information for CVE-2026-101091
请登录查看更多情报信息。
Other References for CVE-2026-101091 (3)
IV. Related Vulnerabilities
Same product: siyuan
-
CVE-2026-101092
SiYuan before v3.8.4 Information Disclosure via getCurrentAt -
CVE-2026-100645
SiYuan 3.7.0 before 3.8.4 Stored XSS via Gallery Kanban -
CVE-2026-100646
SiYuan before v3.8.4 Authentication Bypass via Missing Origi -
CVE-2026-100644
SiYuan before v3.8.4 SQL Injection via dailyNoteSavePath -
CVE-2026-100642
SiYuan v2.1.0 before v3.8.4 Cross-Site Request Forgery via C
Same vendor: siyuan-note
-
CVE-2026-101092
SiYuan before v3.8.4 Information Disclosure via getCurrentAt -
CVE-2026-100645
SiYuan 3.7.0 before 3.8.4 Stored XSS via Gallery Kanban -
CVE-2026-100646
SiYuan before v3.8.4 Authentication Bypass via Missing Origi -
CVE-2026-100644
SiYuan before v3.8.4 SQL Injection via dailyNoteSavePath -
CVE-2026-100642
SiYuan v2.1.0 before v3.8.4 Cross-Site Request Forgery via C
Same weakness: CWE-89
-
CVE-2026-101110
Joomla Extension - ordasoft.com - Unauthenticated SQL Inject -
CVE-2026-100752
Joomla Extension - ordasoft.com - Unauthenticated SQL Inject -
CVE-2026-101108
Joomla Extension - ordasoft.com - Unauthenticated SQL Inject -
CVE-2026-101105
code-projects Matrimonial System Profile Creation Endpoint c -
CVE-2026-86595
SQLi in Iron Mountain's enVision
V. Comments for CVE-2026-101091
No comments yet