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 [email protected] 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) for recognizing and reporting this vulnerability.