CVE-2026-93591

SiYuan before 3.8.3 SQL Injection via unescaped tag in graph.go

Published: Sep 18, 2026Updated: Sep 18, 2026 Sources: CVE List NVDCWE-89

7.6HIGH

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.

No summary for this CVE yet.

CVSS Vector Breakdown

Exploitability

AV:NAttack Vector

Network

AC:LAttack Complexity

Low

PR:LPrivileges Required

Low

UI:NUser Interaction

None

Scope

S:UScope

Unchanged

Impact

C:HConfidentiality

High

I:LIntegrity

Low

A:LAvailability

Low

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Weaknesses

CWE-89

Affected Products

siyuan-note

commercial

siyuanOn-premDesktop App

Consumer Software / productivity

Exploitability

No known exploits, KEV entries, or remediation guidance available for this vulnerability yet.

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Attack Graph

Products CVE Techniques Tactics

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MITRE ATT&CK

1 technique

Initial Access

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References

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

github.com

https://www.vulncheck.com/advisories/siyuan-before-3.8.3-sql-injection-via-unescaped-tag-in-graph-go

vulncheck.com

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