GHSA-pvmx-g8h5-cprj Advanced Content Filter (ACF) vulnerability allowing to execute JavaScript code using malformed HTML

• npm ckeditor4: < 4.17.0 → fixed in 4.17.0

Affected packages The vulnerability has been discovered in the Advanced Content Filter (ACF) module and may affect all plugins used by CKEditor 4. Impact A potential vulnerability has been discovered in CKEditor 4 Advanced Content Filter (ACF) core module. The vulnerability allowed to inject malformed HTML bypassing content sanitization, which could result in executing JavaScript code. It affects all users using the CKEditor 4 at version < 4.17.0. Patches The problem has been recognized and patched. The fix will be available in version 4.17.0. 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 Maurice Dauer (laytonctf) for recognizing and reporting this vulnerability.