CVE-2026-23847
January 19, 2026
SiYuan is a personal knowledge management system. Versions prior to 3.5.4 are vulnerable to reflected cross-site scripting in /api/icon/getDynamicIcon due to unsanitized SVG input. The endpoint generates SVG images for text icons (type=8). The content query parameter is inserted directly into the SVG <text> tag without XML escaping. Since the response Content-Type is image/svg+xml, injecting unescaped tags allows breaking the XML structure and executing JavaScript. Version 3.5.4 patches the issue.]
Affected Packages
https://github.com/siyuan-note/siyuan.git (GITHUB):
Affected version(s) >=v0.1.0 <v3.5.4-dev3Fix Suggestion:
Update to version v3.5.4-dev3github.com/siyuan-note/siyuan/kernel (GO):
Affected version(s) >=v0.0.0-20220531085609-815128bd5343 <v0.0.0-20260118021606-5c0cc375b475Fix Suggestion:
Update to version v0.0.0-20260118021606-5c0cc375b475github.com/siyuan-note/siyuan (GO):
Affected version(s) >=v0.1.0 <v3.5.4Fix Suggestion:
Update to version v3.5.4Related Resources (5)
Do you need more information?
Contact UsCVSS v4
Base Score:
2.1
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
NONE
User Interaction
PASSIVE
Vulnerable System Confidentiality
NONE
Vulnerable System Integrity
NONE
Vulnerable System Availability
NONE
Subsequent System Confidentiality
LOW
Subsequent System Integrity
LOW
Subsequent System Availability
NONE
Exploit Maturity
POC
CVSS v3
Base Score:
6.1
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality
LOW
Integrity
LOW
Availability
NONE
Weakness Type (CWE)
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
EPSS
Base Score:
0.03
