FileManager provides a Backpack admin interface for files and folder. Prior to 3.0.9, deserialization of untrusted data from the mimes parameter could lead to remote code execution. This vulnerability is fixed in 3.0.9.
https://github.com/Laravel-Backpack/FileManager/security/advisories/GHSA-8237-957h-h2c2
https://github.com/Laravel-Backpack/FileManager/commit/2830498b85e05fb3c92179053b4d7c4a0fdb880b