plank/laravel-mediable through version 6.4.0 can allow upload of a dangerous file type when an application using the package accepts or prefers a client-supplie…

CVE-2026-4809 affects plank/laravel-mediable through version 6.4.0, allowing dangerous file type uploads when applications accept client-supplied MIME types. Remote attackers can submit executable PHP code while declaring benign image MIME types, leading to arbitrary file upload. If uploaded files are stored in web-accessible and executable locations, this enables remote code execution. No patch is currently available and the vendor has not responded to disclosure attempts.