MobSF is a mobile application security testing tool used. In version 4.4.0, an authenticated user who uploaded a specially prepared one.a, can write arbitrary files to any directory writable by the user of the MobSF process. This issue has been patched in version 4.4.1.
https://github.com/MobSF/Mobile-Security-Framework-MobSF/security/advisories/GHSA-9gh8-9r95-3fc3
https://github.com/MobSF/Mobile-Security-Framework-MobSF/releases/tag/v4.4.1