PT-2026-29376 · Siyuan Note · Siyuan

Published 2026-03-31 · Updated 2026-03-31 · CVE-2026-34448

NVD

CVSS v3.1

9.0

Critical

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

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 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.

Fix

Code Injection

XSS

Weakness Enumeration

CWE-94

CWE-79

Related Identifiers

CVE-2026-34448

Affected Products

Siyuan

References · 4

• https://nvd.nist.gov/vuln/detail/CVE-2026-34448 · Security Note
• https://github.com/siyuan-note/siyuan/security/advisories/GHSA-rx4h-526q-4458 · Note
• https://github.com/siyuan-note/siyuan/issues/17246 · Note
• https://github.com/siyuan-note/siyuan/releases/tag/v3.6.2 · Note