PT-2026-95721

CVE-2026-93923

Published

2026-09-18

Updated

2026-09-23

Description by

CVSS 3.1

8.8

High

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

Name of the Vulnerable Software and Affected Versions SiYuan versions prior to 3.8.5

Description Stored cross-site scripting occurs because the software fails to escape heading style attributes when rendering HTML for the outline and bookmark dock. Attackers can inject malicious style values by providing crafted notebooks or calling administrative endpoints. These values execute within the Electron renderer, potentially granting full system access.

Recommendations Update SiYuan to version 3.8.5 or later.

Exploitability

Exploit

Fix

Impacts

Researchers

Evil0Rd

Vendors

Affected products

Weakness enumeration

CWE-79: Improper Neutralization of Input During Web Page Generation (\'Cross-site Scripting\')

Related identifiers