CVE-2018-17573

The Wp-Insert plugin through 2.4.2 for WordPress allows upload of arbitrary PHP code because of the exposure and configuration of FCKeditor under fckeditor/editor/filemanager/browser/default/browser.html, fckeditor/editor/filemanager/connectors/test.html, and fckeditor/editor/filemanager/connectors/uploadtest.html.

Source: CVE-2018-17573