{
"id": "GHSA-vg35-5wq7-3x7w",
"aliases": [
"CVE-2026-47761"
],
"details": "### Impact\nStored XSS vulnerability in the media plugin. Attackers can inject malicious scripts via crafted `data-mce-*` attributes, which are executed when content is rendered. Impacts users of TinyMCE with the media plugin enabled.\n\n### Patches\nThis vulnerability has been patched in TinyMCE 8.5.1, TinyMCE 7.9.3 and TinyMCE 5.11.1 LTS by ensuring that, when using the media plugin, any content with `data-mce-object` and `data-mce-p-*` attributes are properly sanitized.\n\n### Workarounds\nNo official workaround available.\n\n### Fix\nTo avoid this vulnerability:\n\n- Upgrade to TinyMCE 8.5.1 or higher.\n- Upgrade to TinyMCE 7.9.3 or higher.\n- Upgrade to TinyMCE 5.11.1 LTS or higher for TinyMCE 5.x (only available as part of commercial [long-term support](https://www.tiny.cloud/long-term-support/) contract).\n\n### Acknowledgements\nTiny thanks [Aymane MAZGUITI](https://github.com/UncleJ4ck) and [Ange Primiterra](https://github.com/ange-primiterra) for their help identifying this vulnerability.",
"summary": "TinyMCE Cross-Site Scripting (XSS) vulnerability using media plugin `data-mce-object` injection",
"affected": [
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"last_affected": "5.10.9"
}
]
}
],
"package": {
"name": "tinymce",
"ecosystem": "npm"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "6.0.0"
},
{
"fixed": "7.9.3"
}
]
}
],
"package": {
"name": "tinymce",
"ecosystem": "npm"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "8.0.0"
},
{
"fixed": "8.5.1"
}
]
}
],
"package": {
"name": "tinymce",
"ecosystem": "npm"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"last_affected": "5.10.9"
}
]
}
],
"package": {
"name": "TinyMCE",
"ecosystem": "NuGet"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "6.0.0"
},
{
"fixed": "7.9.3"
}
]
}
],
"package": {
"name": "TinyMCE",
"ecosystem": "NuGet"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "8.0.0"
},
{
"fixed": "8.5.1"
}
]
}
],
"package": {
"name": "TinyMCE",
"ecosystem": "NuGet"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"last_affected": "5.10.9"
}
]
}
],
"package": {
"name": "tinymce/tinymce",
"ecosystem": "Packagist"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "6.0.0"
},
{
"fixed": "7.9.3"
}
]
}
],
"package": {
"name": "tinymce/tinymce",
"ecosystem": "Packagist"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "8.0.0"
},
{
"fixed": "8.5.1"
}
]
}
],
"package": {
"name": "tinymce/tinymce",
"ecosystem": "Packagist"
}
}
],
"modified": "2026-06-30T21:11:55Z",
"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": "2026-06-05T20:29:43Z",
"references": [
{
"url": "https://github.com/tinymce/tinymce/security/advisories/GHSA-vg35-5wq7-3x7w",
"type": "WEB"
},
{
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-47761",
"type": "ADVISORY"
},
{
"url": "https://github.com/tinymce/tinymce",
"type": "PACKAGE"
},
{
"url": "https://www.tiny.cloud/docs/tinymce/7/7.9.3-release-notes/#overview",
"type": "WEB"
},
{
"url": "https://www.tiny.cloud/docs/tinymce/8/8.5.1-release-notes/#overview",
"type": "WEB"
}
],
"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": "2026-06-05T20:29:43Z"
}
}