{
"id": "GHSA-mh5m-5hw4-5c69",
"aliases": [
"CVE-2026-47760"
],
"details": "### Impact\nTinyMCE 6.8.x contains an XSS vulnerability caused by improper SVG namespace scope handling in the sanitizer. A crafted payload using nested <svg> elements can bypass attribute sanitization and execute arbitrary JavaScript.\n\n### Patches\nThis issue affects TinyMCE 6.8.x-7.0.x. The vulnerability is fixed in TinyMCE 7.1.0 and later.\n\n### Workarounds\nNo official workaround available.\n\n### Acknowledgements\nTiny thanks [maple3142](https://github.com/maple3142) (<https://maple3142.net>) of DEVCORE for their help identifying this vulnerability.\n\n### References\nFix introduced in TinyMCE 7.1.0 though a rewrite of code causing the vulnerability.",
"summary": "TinyMCE Cross-Site Scripting (XSS) vulnerability using sanitization bypass through nested SVGs",
"affected": [
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "6.8.0"
},
{
"fixed": "7.1.0"
}
]
}
],
"package": {
"name": "tinymce",
"ecosystem": "npm"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "6.8.0"
},
{
"fixed": "7.1.0"
}
]
}
],
"package": {
"name": "TinyMCE",
"ecosystem": "NuGet"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "6.8.0"
},
{
"fixed": "7.1.0"
}
]
}
],
"package": {
"name": "tinymce/tinymce",
"ecosystem": "Packagist"
}
}
],
"modified": "2026-06-05T20:09:38Z",
"severity": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N"
}
],
"published": "2026-06-05T20:09:38Z",
"references": [
{
"url": "https://github.com/tinymce/tinymce/security/advisories/GHSA-mh5m-5hw4-5c69",
"type": "WEB"
},
{
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-47760",
"type": "ADVISORY"
},
{
"url": "https://github.com/tinymce/tinymce",
"type": "PACKAGE"
}
],
"schema_version": "1.4.0",
"database_specific": {
"cwe_ids": [
"CWE-79"
],
"severity": "HIGH",
"github_reviewed": true,
"nvd_published_at": "2026-05-28T16:16:28Z",
"github_reviewed_at": "2026-06-05T20:09:38Z"
}
}