CVE-2026-44586 HIGH

CVE-2026-44586: SiYuan: Bazaar marketplace renders unescaped package author metadata, allowing XSS and Electron code execution

Vendor Siyuan-Note
Product siyuan
Weakness CWE-79 · XSS
Published May 14, 2026
Last update May 14, 2026
View on NVD All CVEs

CVSS base score

8.3/10
Attack vector Network
Attack complexity High
Privileges required None
User interaction Required
Confidentiality High
Integrity High

CVSS vector

CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H

What the vulnerability does

01Description

SiYuan is an open-source personal knowledge management system. From 2.1.12 to before 3.7.0. SiYuan's Bazaar marketplace renders package author metadata from the public bazaar stage feed into HTML without escaping. In the desktop app this becomes stored XSS, and because SiYuan's Electron windows are created with nodeIntegration: true and contextIsolation: false, a successful payload can call Node.js APIs and execute code on the host. This vulnerability is fixed in 3.7.0.

Key dates

02Disclosure timeline

May 14, 2026 CVE published
May 14, 2026 Record updated