CVE-2026-116169
SiYuan 2.10.0 before 3.8.7 Stored XSS via KaTeX \href in Math Blocks
- State
- Published
- Severity
- 5.1 Medium
- Published
- Oct 25, 2026
- Updated
- Oct 29, 2026
- Reserved
- Oct 25, 2026
Description
SiYuan from 2.10.0 before 3.8.7 contains a stored cross-site scripting vulnerability that allows users with edit permission to inject script by placing javascript: URLs in math block content rendered with KaTeX trust enabled. Attackers can store \href, \url, or \includegraphics payloads that mathRender assigns via innerHTML, executing script in the application origin when a reader clicks the rendered link.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 5.1 Medium | CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N | VulnCheck |
| 3.1 | 5.4 Medium | CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N | 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-hhvq-jqv9-pgjq)vendor-advisory
- VulnCheck Advisory: SiYuan 2.10.0 before 3.8.7 Stored XSS via KaTeX \href in Math Blocksthird-party-advisory
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