CVE-2026-93922

SiYuan through 3.8.4 Stored XSS via notebook names

Published: Sep 18, 2026Updated: Sep 22, 2026 Sources: CVE List NVDCWE-79

8.8HIGH

Description

SiYuan through 3.8.4 renders notebook names as raw HTML in the Daily Note picker dialog without escaping, allowing stored cross-site scripting in the Electron renderer. Attackers can create notebooks with HTML payloads in names that execute JavaScript with Node.js access when the picker opens, enabling operating system command execution.

No summary for this CVE yet.

CVSS Vector Breakdown

Exploitability

AV:NAttack Vector

Network

AC:LAttack Complexity

Low

PR:NPrivileges Required

None

UI:RUser Interaction

Required

Scope

S:UScope

Unchanged

Impact

C:HConfidentiality

High

I:HIntegrity

High

A:HAvailability

High

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Weaknesses

CWE-79

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

2 techniques

Execution

Initial Access

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References

https://github.com/siyuan-note/siyuan/security/advisories/GHSA-8c2m-33v9-vvqm

github.com

https://github.com/siyuan-note/siyuan

github.com

https://github.com/siyuan-note/siyuan/blob/v3.8.4/app/src/util/mount.ts#L72

github.com

and 2 more references View all →

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