novaGallery: Unauthenticated Path Traversal in Album and Cached Image Routes Allows Reading Images Outside Gallery Root

novaGallery is a php image gallery. Prior to version 2.1.1, a path traversal vulnerability has been identified in novaGallery. This allows unauthenticated users to read image files outside the intended gallery root directory. This issue has been patched in version 2.1.1.