A Cross-Site scripting vulnerability has been found in CKSource CKEditor affecting versions 4.15.1 and earlier. An attacker could send malicious javascript code through the /ckeditor/samples/old/ajax.html file and retrieve an authorized user's information.

An issue was discovered in CKFinder through 2.6.2.1. Improper checks of file names allows remote attackers to upload files without any extension (even if the application was configured to accept files only with a defined set of extensions). This affects CKFinder for ASP, CKFinder for ASP.NET, CKFinder for ColdFusion, and CKFinder for PHP.

An issue was discovered in CKFinder through 2.6.2.1 and 3.x through 3.5.0. The documentation has misleading information that could lead to a conclusion that the application has a built-in bulletproof content sniffing protection.

The ckeditor-for-wordpress plugin before 4.5.3.1 for WordPress has reflected XSS in the "built-in (old)" file browser.