WordPress Improper Limitation of a Pathname to a Restricted Directory (Path Traversal) Vulnerability - CVE-2019-8943
WordPress through 5.0.3 allows Path Traversal in wp_crop_image(). An attacker (who has privileges to crop an image) can write the output image to an arbitrary directory via a filename containing two image extensions and ../ sequences such as a filename ending with the .jpg/../../file.jpg substring.