CVE-2026-92985

HIGH CVSS 4.0: 8.6 EPSS 0.82%
Updated Sep 17, 2026
B3Log
Parameter Value
CVSS 8.6 (HIGH)
Affected Versions before 3.8.4
Fixed In 3.8.4
Type CWE-79 (Cross-Site Scripting (XSS))
Vendor B3Log
Public PoC No

SiYuan versions before 3.8.4 fail to escape bookmark labels imported from notebook files when rendering them in the dock tree. Attackers can craft malicious .sy notebook files with unescaped HTML in bookmark attributes that execute scripts in the Electron renderer with access to child_process for command execution.

Attack Parameters

Attack Vector
Network
Can be exploited remotely
Attack Complexity
Low
Easy to exploit
Attack Requirements
None
No additional conditions
Privileges Required
None
No privileges needed
User Interaction
Active
User action required

Impact Assessment

Confidentiality
High
Complete data leak
Integrity
High
Complete data modification
Availability
High
Complete denial of service

CVSS Vector v4.0

Vulnerable Products 1

Configuration From (including) Up to (excluding)
B3log Siyuan
cpe:2.3:a:b3log:siyuan:*:*:*:*:*:*:*:*
— 3.8.4