Description

SiYuan is a personal knowledge management system. Versions prior to 3.5.4 have a stored Cross-Site Scripting (XSS) vulnerability that allows an attacker to inject arbitrary HTML attributes into the `icon` attribute of a block via the `/api/attr/setBlockAttrs` API. The payload is later rendered in the dynamic icon feature in an unsanitized context, leading to stored XSS and, in the desktop environment, potential remote code execution (RCE). This issue bypasses the previous fix for issue `#15970` (XSS → RCE via dynamic icons). Version 3.5.4 contains an updated fix.

INFO

Published Date :

2026-01-19T20:00:05.839Z

Last Modified :

2026-01-20T20:05:02.903Z

Source :

GitHub_M
AFFECTED PRODUCTS

The following products are affected by CVE-2026-23852 vulnerability.

Vendors Products
B3log
  • Siyuan
Siyuan
  • Siyuan
REFERENCES

Here, you will find a curated list of external links that provide in-depth information to CVE-2026-23852.

URL Resource
https://github.com/siyuan-note/siyuan/commit/0be7e1d4e0da9aac0da850b7aeb9b50ede7e5bdb cve-icon cve-icon
https://github.com/siyuan-note/siyuan/security/advisories/GHSA-7c6g-g2hx-23vv cve-icon cve-icon
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CVSS Vulnerability Scoring System

Detailed values of each vector for above chart.
Attack Vector
Attack Complexity
Attack Requirements
Privileges Required
User Interaction
VS Confidentiality
VS Integrity
VS Availability
SS Confidentiality
SS Integrity
SS Availability
Detailed values of each vector for above chart.
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality Impact
Integrity Impact
Availability Impact