CVE-2026-93591

High

Description

SiYuan versions before 3.8.3 contain an SQL injection vulnerability in the graph.go query2Stmt function where tag values are concatenated raw into SQL string literals without escaping single quotes. A publish-mode reader or anonymous visitor can inject SQL via inline HTML span tags in the getGraph endpoint to execute arbitrary queries on the read-write database and exfiltrate private data across notebooks.

SeverityHigh

CVSS7.6

Exploit probability—

ProductSiyuan

PublishedSep 18, 2026

First seenSep 18, 2026

Weakness typeCWE-89SQL injection

How to fix

Update

siyuan-note siyuan3.8.3 or later

Vendor advisories

github.com/siyuan-note/siyuan/security/advisories/GHSA-5rwv-4j4c-f954

Affected products

Product	Affected versions	Fixed in
siyuan-note siyuan	v < 3.8.3	3.8.3

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