CKEditor cross-site scripting vulnerability in AJAX sample
### Affected packages
The vulnerability has been discovered in the AJAX sample available at the `samples/old/ajax.html` file location. All integrators that use that sample in the production code can be affected.
### Impact
A potential vulnerability has been discovered in one of CKEditor's 4 samples that are shipped with production code. The vulnerability allowed to execute JavaScript code by abusing the AJAX sample. It affects all users using the CKEditor 4 at version < 4.24.0-lts where `samples/old/ajax.html` is used in a production environment.
### Patches
The problem has been recognized and patched. The fix will be available in version 4.24.0-lts.
### For more information
Email us at [security@cksource.com](mailto:security@cksource.com) if you have any questions or comments about this advisory.
### Acknowledgements
The CKEditor 4 team would like to thank Rafael Pedrero and INCIBE (original report
https://www.incibe.es/en/incibe-cert/notices/aviso/cross-site-scripting-vulnerability-cksource-ckeditor) for recognizing and reporting this vulnerability.