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vuln-cve/data/2026/32xxx/CVE-2026-32940.json
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{
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"cveMetadata": {
"cveId": "CVE-2026-32940",
"assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"state": "PUBLISHED",
"assignerShortName": "GitHub_M",
"dateReserved": "2026-03-17T00:05:53.283Z",
"datePublished": "2026-03-20T03:33:43.069Z",
"dateUpdated": "2026-03-20T19:53:35.414Z"
},
"containers": {
"cna": {
"title": "SiYuan has a SanitizeSVG bypass via data:text/xml in getDynamicIcon (incomplete fix for CVE-2026-29183)",
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-79",
"lang": "en",
"description": "CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')",
"type": "CWE"
}
]
},
{
"descriptions": [
{
"cweId": "CWE-184",
"lang": "en",
"description": "CWE-184: Incomplete List of Disallowed Inputs",
"type": "CWE"
}
]
}
],
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "NONE",
"baseScore": 9.3,
"baseSeverity": "CRITICAL",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "NONE",
"scope": "CHANGED",
"userInteraction": "REQUIRED",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N",
"version": "3.1"
}
}
],
"references": [
{
"name": "https://github.com/siyuan-note/siyuan/security/advisories/GHSA-4mx9-3c2h-hwhg",
"tags": [
"x_refsource_CONFIRM"
],
"url": "https://github.com/siyuan-note/siyuan/security/advisories/GHSA-4mx9-3c2h-hwhg"
},
{
"name": "https://github.com/siyuan-note/siyuan/commit/d01d561875d4f744e9f6232f1d4831e3642b8696",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/siyuan-note/siyuan/commit/d01d561875d4f744e9f6232f1d4831e3642b8696"
},
{
"name": "https://github.com/advisories/GHSA-6865-qjcf-286f",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/advisories/GHSA-6865-qjcf-286f"
},
{
"name": "https://github.com/siyuan-note/siyuan/releases/tag/v3.6.1",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/siyuan-note/siyuan/releases/tag/v3.6.1"
}
],
"affected": [
{
"vendor": "siyuan-note",
"product": "siyuan",
"versions": [
{
"version": "< 3.6.1",
"status": "affected"
}
]
}
],
"providerMetadata": {
"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"shortName": "GitHub_M",
"dateUpdated": "2026-03-20T03:33:43.069Z"
},
"descriptions": [
{
"lang": "en",
"value": "SiYuan is a personal knowledge management system. In versions 3.6.0 and below, SanitizeSVG has an incomplete blocklist — it blocks data:text/html and data:image/svg+xml in href attributes but misses data:text/xml and data:application/xml, both of which can render SVG with JavaScript execution. The unauthenticated /api/icon/getDynamicIcon endpoint serves user-controlled input (via the content parameter) directly into SVG markup using fmt.Sprintf with no escaping, served as Content-Type: image/svg+xml. This creates a click-through XSS: a victim navigates to a crafted URL, sees an SVG with an injected link, and clicking it triggers JavaScript via the bypassed MIME types. The attack requires direct navigation to the endpoint or <object>/<embed> embedding, since <img> tag rendering in the frontend doesn't allow interactive links. This issue has been fixed in version 3.6.1."
}
],
"source": {
"advisory": "GHSA-4mx9-3c2h-hwhg",
"discovery": "UNKNOWN"
}
},
"adp": [
{
"metrics": [
{
"other": {
"type": "ssvc",
"content": {
"timestamp": "2026-03-20T19:52:53.104887Z",
"id": "CVE-2026-32940",
"options": [
{
"Exploitation": "poc"
},
{
"Automatable": "no"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"version": "2.0.3"
}
}
}
],
"title": "CISA ADP Vulnrichment",
"providerMetadata": {
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP",
"dateUpdated": "2026-03-20T19:53:35.414Z"
}
}
]
}
}