Crop-Thumbnails < 1.10.0 - Author+ Arbitrary Attachment Read and Overwrite via crop REST Endpoints

The Crop Thumbnails WordPress plugin before 1.10.0 does not perform object-level authorization when reading and re-cropping media attachments, allowing any authenticated user with the upload capability (the Author role by default) to read the metadata of, and overwrite the generated thumbnail files and stored metadata of, media attachments belonging to other users.