CVE-2026-47759
High
Description
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 via unsanitized data-mce-* attributes (data-mce-href, data-mce-src, data-mce-style). Allows attackers to inject malicious values that override safe attributes during serialization, bypassing validation. This vulnerability is fixed in 5.11.1, 7.9.3, and 8.5.1.
SeverityHigh
CVSS8.7
Exploit probability—
Product
Tinymce
PublishedMay 28, 2026
First seenMay 28, 2026
Weakness typeCWE-79Cross-site scripting (XSS)
How to fix
Update
- tiny tinymce5.11.1, 7.9.3, 8.5.1 or later
- tinymce7.9.3, 8.5.1 or later
- TinyMCE7.9.3, 8.5.1 or later
- tinymce/tinymce7.9.3, 8.5.1 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| tiny tinymce | v < 5.11.1, 6.0.0 ≤ v < 7.9.3, 8.0.0 ≤ v < 8.5.1 | 5.11.1, 7.9.3, 8.5.1 |
| tinymcenpm | v ≤ 5.10.9, 6.0.0 ≤ v < 7.9.3, 8.0.0 ≤ v < 8.5.1 | 7.9.3, 8.5.1 |
| TinyMCENuGet | v ≤ 5.10.9, 6.0.0 ≤ v < 7.9.3, 8.0.0 ≤ v < 8.5.1 | 7.9.3, 8.5.1 |
| tinymce/tinymcePackagist | v ≤ 5.10.9, 6.0.0 ≤ v < 7.9.3, 8.0.0 ≤ v < 8.5.1 | 7.9.3, 8.5.1 |
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