GHSA-w9jx-4g6g-rp7x
TinyMCE Cross-Site Scripting (XSS) vulnerability using noscript elements
Packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| npm | tinymce | < 5.11.0 | 5.11.0 |
| NuGet | TinyMCE | < 5.11.0 | 5.11.0 |
| Packagist | tinymce/tinymce | < 5.11.0 | 5.11.0 |
| npm | tinymce | >= 6.0.0, < 6.8.4 | 6.8.4 |
| npm | tinymce | >= 7.0.0, < 7.2.0 | 7.2.0 |
| NuGet | TinyMCE | >= 6.0.0, < 6.8.4 | 6.8.4 |
| NuGet | TinyMCE | >= 7.0.0, < 7.2.0 | 7.2.0 |
| Packagist | tinymce/tinymce | >= 6.0.0, < 6.8.4 | 6.8.4 |
| Packagist | tinymce/tinymce | >= 7.0.0, < 7.2.0 | 7.2.0 |
| PyPI | django-tinymce | < 4.1.0 | 4.1.0 |
Details
As written in the advisory (Markdown source, shown as plain text).
### Impact
A [cross-site scripting (XSS)](https://owasp.org/www-community/attacks/xss/) vulnerability was discovered in TinyMCE’s content parsing code. This allowed specially crafted noscript elements containing malicious code to be executed when that content was loaded into the editor.
### Patches
This vulnerability has been patched in TinyMCE 7.2.0, TinyMCE 6.8.4 and TinyMCE 5.11.0 LTS by ensuring that content within noscript elements are properly parsed.
### Fix
To avoid this vulnerability:
* Upgrade to TinyMCE 7.2.0 or higher.
* Upgrade to TinyMCE 6.8.4 or higher for TinyMCE 6.x.
* Upgrade to TinyMCE 5.11.0 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 [Malav Khatri](https://malavkhatri.com/) and another reporter for their help identifying this vulnerability.
### References
* [TinyMCE 6.8.4](https://www.tiny.cloud/docs/tinymce/6/6.8.4-release-notes/#overview)
* [TinyMCE 7.2.0](https://www.tiny.cloud/docs/tinymce/7/7.2-release-notes/#overview)
### For more information
If you have any questions or comments about this advisory:
* Email us at [[email protected]](mailto:[email protected])
* Open an issue in the [TinyMCE repo](https://github.com/tinymce/tinymce/issues?q=is%3Aissue+is%3Aopen+sort%3Aupdated-desc)
References
External links from the advisory. They lead to third-party sites.
- https://github.com/tinymce/tinymce/security/advisories/GHSA-w9jx-4g6g-rp7x
- https://nvd.nist.gov/vuln/detail/CVE-2024-38357
- https://github.com/tinymce/tinymce/commit/5acb741665a98e83d62b91713c800abbff43b00d
- https://github.com/tinymce/tinymce/commit/a9fb858509f86dacfa8b01cfd34653b408983ac0
- https://github.com/tinymce/tinymce
- https://owasp.org/www-community/attacks/xss
- https://www.tiny.cloud/docs/tinymce/6/6.8.4-release-notes/#overview
- https://www.tiny.cloud/docs/tinymce/7/7.2-release-notes/#overview