GHSA-vg35-5wq7-3x7w
TinyMCE Cross-Site Scripting (XSS) vulnerability using media plugin `data-mce-object` injection
Quick fix
GHSA-vg35-5wq7-3x7w — tinymce: upgrade to the fixed version with the command below.
npm install tinymce@7.9.3Details
### Impact Stored 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.
### Patches This 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.
### Workarounds No official workaround available.
### Fix To avoid this vulnerability:
- Upgrade to TinyMCE 8.5.1 or higher. - Upgrade to TinyMCE 7.9.3 or higher. - 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).
### Acknowledgements Tiny thanks [Aymane MAZGUITI](https://github.com/UncleJ4ck) and [Ange Primiterra](https://github.com/ange-primiterra) for their help identifying this vulnerability.
Are you affected?
Enter the version of the package you're using.
Affected packages
0No fixed version published yet for tinymce (npm). Pin to a known-safe version or switch to an alternative.
0No fixed version published yet for TinyMCE (nuget). Pin to a known-safe version or switch to an alternative.
0No fixed version published yet for tinymce/tinymce (composer). Pin to a known-safe version or switch to an alternative.
6.0.0Fixed in: 7.9.3composer require tinymce/tinymce:^7.9.38.0.0Fixed in: 8.5.1composer require tinymce/tinymce:^8.5.1References
- https://github.com/tinymce/tinymce/security/advisories/GHSA-vg35-5wq7-3x7w[WEB]
- https://nvd.nist.gov/vuln/detail/CVE-2026-47761[ADVISORY]
- https://github.com/tinymce/tinymce[PACKAGE]
- https://www.tiny.cloud/docs/tinymce/7/7.9.3-release-notes/#overview[WEB]
- https://www.tiny.cloud/docs/tinymce/8/8.5.1-release-notes/#overview[WEB]