High · published May 28, 2026
TinyMCE is an open source rich text editor. Prior to 5.11.1, 7.9.3, and 8.5.1, there is a 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. This vulnerability is fixed in 5.11.1, 7.9.3, and 8.5.1.
| Product | Versions | Fixed in |
|---|---|---|
| tiny/tinymce | < 5.11.1 | 5.11.1 |
| tiny/tinymce | ≥ 6.0.0, < 7.9.3 | 7.9.3 |
| tiny/tinymce | ≥ 8.0.0, < 8.5.1 | 8.5.1 |