CVE-2026-100644

High

Description

SiYuan before v3.8.4 contains a SQL injection vulnerability in the graph query endpoint where the dailyNoteSavePath parameter is concatenated into SQL without escaping. Unauthenticated attackers on published sites with auth disabled can inject SQL via UNION SELECT to extract arbitrary database rows from all notebooks.

SeverityHigh

CVSS7.5

Exploit probability—

ProductSiyuan

PublishedSep 26, 2026

First seenSep 26, 2026

Weakness typeCWE-89SQL injection

How to fix

Update

siyuan-note siyuan3.8.4 or later

Vendor advisories

github.com/siyuan-note/siyuan/security/advisories/GHSA-xr4h-j7cg-q8pc

Affected products

Product	Affected versions	Fixed in
siyuan-note siyuan	v < 3.8.4	3.8.4

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