Medium
SiYuan 2.10.0 before 3.8.7 Stored XSS via KaTeX \href in Math Blocks
Type: advisorySources: OSV
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.
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2026-116169
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 3 Nov 2026, 16:19 UTC · Revision 1
Source evidence
SiYuan 2.10.0 before 3.8.7 Stored XSS via KaTeX \href in Math Blocks
core-osv · Original sourcePublished 25 Oct 2026, 13:20 UTC
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.
osv:CVE-2026-116169
Complete source record
{
"id": "f3fb79e4ba3a1b3187e9de530cbcb04c905a06dcbd020fa5f91f9007fcbc4247",
"url": "https://osv.dev/vulnerability/CVE-2026-116169",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "SiYuan 2.10.0 before 3.8.7 Stored XSS via KaTeX \\href in Math Blocks",
"summary": "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.",
"evidence": "osv:CVE-2026-116169",
"products": [],
"severity": "medium",
"structured": {
"id": "CVE-2026-116169",
"aliases": [
"CVE-2026-116169",
"GHSA-hhvq-jqv9-pgjq"
],
"metrics": [
{
"type": "CVSS_V4",
"score": "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"
}
],
"affected": [
{
"ranges": [
{
"repo": "https://github.com/siyuan-note/siyuan",
"type": "GIT",
"events": [
{
"introduced": "a516f8da2cf141aaebd07cdf96205db6ec2145aa"
},
{
"fixed": "7a7430d8a3cf362e23de004a454ddabe651dc778"
}
],
"database_specific": {
"extracted_events": [
{
"range": [
{
"introduced": "2.10.0"
},
{
"fixed": "3.8.7"
}
],
"source": "AFFECTED_FIELD",
"strategy": "StandardRange"
},
{
"range": [
{
"introduced": "2.10.0"
},
{
"fixed": "3.8.7"
}
],
"source": "DESCRIPTION"
}
]
}
}
],
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],
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-116169.json"
}
}
],
"modified": "2026-10-31T02:30:23.865273504Z",
"provider": "osv",
"references": [
"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/116xxx/CVE-2026-116169.json",
"https://github.com/siyuan-note/siyuan/security/advisories/GHSA-hhvq-jqv9-pgjq",
"https://nvd.nist.gov/vuln/detail/CVE-2026-116169",
"https://www.vulncheck.com/advisories/siyuan-2.10.0-before-3.8.7-stored-xss-via-katex-href-in-math-blocks"
],
"provider_metadata": {
"cwe_ids": [
"CWE-79"
],
"cna_assigner": "VulnCheck",
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/116xxx/CVE-2026-116169.json"
}
},
"related_cves": [
{
"value": "CVE-2026-116169",
"evidence": "/id"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 497275,
"published_at": "2026-10-25T13:20:11.71+00:00"
}