CVE-2024-39686: Improper Neutralization of Special Elements used in an OS Command

Bert-VITS2 is the VITS2 Backbone with multilingual bert. User input supplied to the datadir variable is used directly in a command executed with subprocess.runcmd, shell=True in the bertgen function, which leads to arbitrary command execution. This affects fishaudio/Bert-VITS2 2.3 and earlier...