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 forged mce:protected comments. Allows attackers to bypass sanitization and inject scripts that execute when content is restored. Impacts users who utilize the protect option. This vulnerability is fixed in 5.11.1, 7.9.3, and 8.5.1.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| tinymce | tinymce | < 5.11.1, >= 6.0.0, <= 6.8.6, >= 7.0.0, < 7.9.3, >= 8.0.0, < 8.5.1 | — |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 20.04 LTS | tinymce | No fix yet | — |
| Ubuntu 18.04 LTS | tinymce | No fix yet | — |
| Ubuntu 16.04 LTS | tinymce | No fix yet | — |
Affected packages
| Ecosystem | Package | Affected | Fixed | Record |
|---|---|---|---|---|
| npm | tinymce | <= 5.10.9 | — | GHSA-v98h-vmpc-fpqv |
| npm | tinymce | >= 6.0.0, < 7.9.3 | 7.9.3 | GHSA-v98h-vmpc-fpqv |
| npm | tinymce | >= 8.0.0, < 8.5.1 | 8.5.1 | GHSA-v98h-vmpc-fpqv |
| NuGet | TinyMCE | <= 5.10.9 | — | GHSA-v98h-vmpc-fpqv |
| NuGet | TinyMCE | >= 6.0.0, < 7.9.3 | 7.9.3 | GHSA-v98h-vmpc-fpqv |
| NuGet | TinyMCE | >= 8.0.0, < 8.5.1 | 8.5.1 | GHSA-v98h-vmpc-fpqv |
| Packagist | tinymce/tinymce | <= 5.10.9 | — | GHSA-v98h-vmpc-fpqv |
| Packagist | tinymce/tinymce | >= 6.0.0, < 7.9.3 | 7.9.3 | GHSA-v98h-vmpc-fpqv |
| Packagist | tinymce/tinymce | >= 8.0.0, < 8.5.1 | 8.5.1 | GHSA-v98h-vmpc-fpqv |
Advisories 1
- WID-SEC-2026-3376 Atlassian Bamboo, Bitbucket, Confluence, Fisheye/Crucible, Jira Software und Jira Service Management: Mehrere Schwachstellen BSI CERT-Bund (WID) · Nov 10, 2026