SiYuan: Stored XSS in Attribute View gallery/kanban cover rendering allows arbitrary command execution in the desktop client

Summary

SiYuan is a personal knowledge management system. Prior to version 3.6.2, an attacker who can place a malicious URL in an Attribute View mAsse field can trigger stored XSS when a victim opens the Gallery or Kanban view with “Cover From -> Asset Field” enabled. The vulnerable code accepts arbitrary http(s) URLs without extensions as images, stores the attacker-controlled string in coverURL, and injects it directly into an <img src="..."> attribute without escaping. In the Electron desktop client, the injected JavaScript executes with nodeIntegration enabled and contextIsolation disabled, so the XSS reaches arbitrary OS command execution under the victim’s account. This issue has been patched in version 3.6.2.

Timeline

1. Mar 31, 2026, 9:44 PM UTCCVE published
2. Apr 3, 2026, 4:04 PM UTCCISA SSVC assessment

   Exploitation: poc · Automatable: no · Technical impact: total

3. Apr 3, 2026, 4:05 PM UTCRecord last updated

Affected versions

• siyuan-note siyuan

  fixed in 3.6.2

• github.com/siyuan-note/siyuan/kernelGo

  All versions

• github.com/siyuan-note/siyuan/kernelGo

  fixed in 3.6.2

References 3