CVE-2026-92986
SiYuan before 3.8.4 Cross-Site Scripting via Document Title
- State
- Published
- Severity
- 8.6 High
- Published
- Sep 17, 2026
- Updated
- Sep 17, 2026
- Reserved
- Sep 17, 2026
Description
SiYuan before 3.8.4 renders document titles as HTML in the backlink dock tree without escaping markup characters. Attackers can set malicious titles through the rename API or crafted notebooks to execute scripts in the Electron renderer with access to child_process for 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
- Patch Commitpatch
- https://github.com/siyuan-note/siyuanproduct
- GitHub Security Advisory (GHSA-c5h9-g2c6-fxjw)vendor-advisory
- https://github.com/siyuan-note/siyuan/blob/v3.8.3/app/src/util/Tree.ts#L134technical-description
- VulnCheck Advisory: SiYuan before 3.8.4 Cross-Site Scripting via Document Titlethird-party-advisory
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