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CVE PROGRAM SOURCE RECORD9.4 Critical

CVE-2026-66395

SiYuan Desktop before v3.7.2 Reflected XSS to RCE via siyuan Protocol

Description

SiYuan desktop before v3.7.2 contains a reflected cross-site scripting vulnerability in the bazaar plugin readme handler that allows attackers to execute arbitrary code by crafting a malicious siyuan:// deep link. Attackers can inject HTML payloads via the plugin name parameter that execute with full Node.js access through insertAdjacentHTML rendering in an insecurely configured Electron renderer.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

siyuan-note siyuan

Default version status: unaffected

  • 0 to < 3.7.2affected
  • 3.7.2unaffected
pkg:golang/github.com/siyuan-note/siyuan

References