WordPress versions before 4.9.9 and 5.x before 5.0.1 have a security vulnerability that allows someone with author privileges to execute arbitrary code. This is done by changing a Post Meta entry to an arbitrary string ending with a “”.jpg?file.php”” substring and then uploading a specially crafted image containing PHP code in the Exif metadata. This vulnerability is identified by the name CVE-2019-8943.