CVE-2026-45260: Pimcore: Missing Authorization in WebDAV MOVE via unchecked asset move handling

Pimcore’s WebDAV asset endpoint exposes a MOVE operation through /asset/webdav{path} without adding an authentication plugin in the WebDAV controller. The Tree::move() implementation then performs asset mutation and deletion before checking a current Pimcore user or any asset permissions.

An unauthenticated remote attacker who knows two existing asset paths in the same directory can send a WebDAV MOVE request that deletes the source asset. Authenticated low-privileged users may also be able to perform unauthorized asset move or overwrite operations because the move path does not enforce rename, delete, create, or publish permissions.