GHSA-w9jx-4g6g-rp7x
GitHub Security Advisory
TinyMCE Cross-Site Scripting (XSS) vulnerability using noscript elements
Advisory Details
### 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)
Affected Packages
Related CVEs
Key Information
Dataset
Data from GitHub Advisory Database. This information is provided for research and educational purposes.