WP Photo Album Plus < 9.2.09.002 - Subscriber+ Cross-Album File Upload via Missing Authorization

The WP Photo Album Plus WordPress plugin before 9.2.09.002 does not check that the current user is allowed to upload into the album they target when it processes a front-end upload, allowing any authenticated user, such as a Subscriber, to upload files into albums owned by other users or by the administrator. Exploitation requires the WP Photo Album Plus WordPress plugin before 9.2.09.002's front-end user upload feature to be enabled, which is not the default.