CVE-2026-93922
SiYuan through 3.8.4 Stored XSS via notebook names
- State
- Published
- Severity
- 8.6 High
- Published
- Sep 18, 2026
- Updated
- Sep 22, 2026
- Reserved
- Sep 18, 2026
Description
SiYuan through 3.8.4 renders notebook names as raw HTML in the Daily Note picker dialog without escaping, allowing stored cross-site scripting in the Electron renderer. Attackers can create notebooks with HTML payloads in names that execute JavaScript with Node.js access when the picker opens, enabling operating system command execution.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 8.6 High | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N | VulnCheck |
| 3.1 | 8.8 High | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H | VulnCheck |
Weaknesses
- CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Affected Products
| Product | Versions |
|---|---|
siyuansiyuan-note |
|
References
- GitHub Security Advisory (GHSA-8c2m-33v9-vvqm)vendor-advisory
- https://github.com/siyuan-note/siyuanproduct
- https://github.com/siyuan-note/siyuan/blob/v3.8.4/app/src/util/mount.ts#L72technical-description
- https://github.com/siyuan-note/siyuan/blob/v3.8.4/kernel/model/file.go#L2446-L2454technical-description
- VulnCheck Advisory: SiYuan through 3.8.4 Stored XSS via notebook namesthird-party-advisory
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