Vulnerability · Published Sep 26, 2026 · Assigned by VulnCheck
CVE-2026-100645SiYuan 3.7.0 before 3.8.4 Stored XSS via Gallery Kanban
High 8.0
In plain English
A high-severity cross-site scripting in siyuan from siyuan-note. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 38% of all known vulnerabilities).
Severity (CVSS 3.1)8.0High
Exploit odds (30 days)0.4%top 61.6% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack toolingNoneno public tooling known
Official description
SiYuan versions 3.7.0 before 3.8.4 contain a stored cross-site scripting vulnerability in gallery and kanban database renderers where field descriptions are not escaped in aria-label attributes. In the Electron desktop app with nodeIntegration enabled, attackers can inject JavaScript that calls Node.js child_process APIs to execute arbitrary commands with user privileges.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| siyuan-note | siyuan | 3.7.0 – before 3.8.4 |
Weakness: CWE-79 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H
References
- GitHub Security Advisory (GHSA-556j-q8c8-qqg3) vendor-advisory
- VulnCheck Advisory: SiYuan 3.7.0 before 3.8.4 Stored XSS via Gallery Kanban third-party-advisory