CVE-2026-93922: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in siyuan-note siyuan
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.
AI Analysis
Technical Summary
SiYuan versions up to 3.8.4 improperly neutralize input during web page generation by rendering notebook names as raw HTML in the Daily Note picker dialog without escaping. This stored XSS vulnerability enables attackers to embed HTML payloads in notebook names that execute JavaScript code with Node.js access in the Electron renderer context. Consequently, this can lead to arbitrary operating system command execution when the picker dialog is accessed.
Potential Impact
An attacker can execute arbitrary JavaScript code with Node.js privileges in the Electron renderer process by crafting notebook names containing malicious HTML payloads. This can result in full operating system command execution, posing a high security risk including potential system compromise.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance.
CVE-2026-93922: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in siyuan-note siyuan
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.
CVSS v4.0
Score 8.6high
Affected software
siyuan-note
siyuan
pkg:golang/github.com/siyuan-note/siyuan/kernelRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
SiYuan versions up to 3.8.4 improperly neutralize input during web page generation by rendering notebook names as raw HTML in the Daily Note picker dialog without escaping. This stored XSS vulnerability enables attackers to embed HTML payloads in notebook names that execute JavaScript code with Node.js access in the Electron renderer context. Consequently, this can lead to arbitrary operating system command execution when the picker dialog is accessed.
Potential Impact
An attacker can execute arbitrary JavaScript code with Node.js privileges in the Electron renderer process by crafting notebook names containing malicious HTML payloads. This can result in full operating system command execution, posing a high security risk including potential system compromise.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- VulnCheck
- Date Reserved
- 2026-09-18T21:57:00.085Z
- Cvss Version
- 4.0
- State
- PUBLISHED
Threat ID: 6aadc9f655bf5e2cf5afb79f
Added to database: 09/18/2026, 23:32:06 UTC
Last enriched: 09/18/2026, 23:46:34 UTC
Last updated: 09/19/2026, 02:42:04 UTC
Views: 9
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