CVE-2026-116169

Medium

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.

SeverityMedium

CVSS5.4

Exploit probability—

ProductSiyuan

PublishedOct 25, 2026

First seenOct 25, 2026

Weakness typeCWE-79Cross-site scripting (XSS)

How to fix

Update

siyuan-note siyuan3.8.7 or later

Vendor advisories

github.com/siyuan-note/siyuan/security/advisories/GHSA-hhvq-jqv9-pgjq

Affected products

Product	Affected versions	Fixed in
siyuan-note siyuan	2.10.0 ≤ v < 3.8.7	3.8.7

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