PT-2026-29377 · Siyuan Note · Siyuan

Published 2026-03-31 · Updated 2026-03-31 · CVE-2026-34449

NVD

CVSS v3.1

9.6

Critical

AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H

SiYuan is a personal knowledge management system. Prior to version 3.6.2, a malicious website can achieve Remote Code Execution (RCE) on any desktop running SiYuan by exploiting the permissive CORS policy (Access-Control-Allow-Origin: * + Access-Control-Allow-Private-Network: true) to inject a JavaScript snippet via the API. The injected snippet executes in Electron's Node.js context with full OS access the next time the user opens SiYuan's UI. No user interaction is required beyond visiting the malicious website while SiYuan is running. This issue has been patched in version 3.6.2.

Fix

Weakness Enumeration

CWE-942

Related Identifiers

CVE-2026-34449

Affected Products

Siyuan

References · 4

• https://nvd.nist.gov/vuln/detail/CVE-2026-34449 · Security Note
• https://github.com/siyuan-note/siyuan/security/advisories/GHSA-68p4-j234-43mv · Note
• https://github.com/siyuan-note/siyuan/issues/17246 · Note
• https://github.com/siyuan-note/siyuan/releases/tag/v3.6.2 · Note