GHSA-6v96-m24v-f58j

Description

### Affected Packages The issue impacts only editor instances with enabled [version notifications](https://ckeditor.com/docs/ckeditor4/latest/api/CKEDITOR_config.html#cfg-versionCheck). Please note that this feature is disabled by default in all CKEditor 4 LTS versions. Therefore, if you use CKEditor 4 LTS, it is highly unlikely that you are affected by this vulnerability. If you are unsure, please [contact us](mailto:security@cksource.com). ### Impact A theoretical vulnerability has been identified in CKEditor 4.22 (and above). In a highly unlikely scenario where an attacker gains control over the https://cke4.ckeditor.com domain, they could potentially execute an attack on CKEditor 4 instances. Although the vulnerability is purely hypothetical, we have addressed it in CKEditor 4.25.0-lts to ensure compliance with security best practices. ### Patches The issue has been recognized and patched. The fix is available in version 4.25.0-lts. ### For More Information If you have any questions or comments about this advisory, please email us at [security@cksource.com](mailto:security@cksource.com).