CVE-2026-116675
High
Description
TinyMCE is an open source rich text editor. From 7.9.3 until 7.9.4 and from 8.5.1 until 8.9.3, the media plugin creates elements crafted through data-mce-object in the active document before sanitization. Those elements can execute malicious scripts during processing, resulting in stored cross-site scripting for users with the media plugin enabled. This issue is fixed in versions 8.9.3 and 7.9.4.
SeverityHigh
CVSS8.5
Exploit probability—
Product
Tinymce
PublishedOct 27, 2026
First seenOct 27, 2026
Weakness typeCWE-79Cross-site scripting (XSS)
How to fix
Update
- tinymce8.9.3, 7.9.4 or later
- TinyMCE8.9.3, 7.9.4 or later
- tinymce/tinymce8.9.3, 7.9.4 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| tinymcenpm | 8.5.1 ≤ v < 8.9.3, 7.9.3 ≤ v < 7.9.4 | 8.9.3, 7.9.4 |
| TinyMCENuGet | 8.5.1 ≤ v < 8.9.3, 7.9.3 ≤ v < 7.9.4 | 8.9.3, 7.9.4 |
| tinymce/tinymcePackagist | 8.5.1 ≤ v < 8.9.3, 7.9.3 ≤ v < 7.9.4 | 8.9.3, 7.9.4 |
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