{"id":"CVE-2026-47761","aliases":["GHSA-vg35-5wq7-3x7w"],"url":"https://o3.security/vulnerability/CVE-2026-47761","summary":"TinyMCE Cross-Site Scripting (XSS) vulnerability using media plugin `data-mce-object` injection","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.","published":"2026-05-28T15:20:57.814Z","modified":"2026-10-16T02:30:37.613227210Z","cvss":{"score":8.7,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N"},"epss":{"score":0.00264,"percentile":0.18458,"asOf":"2026-08-20"},"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"npm","name":"tinymce","fixedVersion":null},{"ecosystem":"npm","name":"tinymce","fixedVersion":"7.9.3"},{"ecosystem":"npm","name":"tinymce","fixedVersion":"8.5.1"},{"ecosystem":"NuGet","name":"TinyMCE","fixedVersion":null},{"ecosystem":"NuGet","name":"TinyMCE","fixedVersion":"7.9.3"},{"ecosystem":"NuGet","name":"TinyMCE","fixedVersion":"8.5.1"},{"ecosystem":"Packagist","name":"tinymce/tinymce","fixedVersion":null},{"ecosystem":"Packagist","name":"tinymce/tinymce","fixedVersion":"7.9.3"},{"ecosystem":"Packagist","name":"tinymce/tinymce","fixedVersion":"8.5.1"}],"fix":null,"references":[{"type":"WEB","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":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/47xxx/CVE-2026-47761.json"},{"type":"ADVISORY","url":"https://github.com/tinymce/tinymce/security/advisories/GHSA-vg35-5wq7-3x7w"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-47761"},{"type":"PACKAGE","url":"https://github.com/tinymce/tinymce"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-10-16T02:30:37.613227210Z"}}