CVE-2024-39205

CVE-2024-28397 is a sandbox escape in js2py versions 0.74 and below. js2py is a popular python package that can evaluate javascript code inside a python interpreter. The vulnerability allows for an attacker to obtain a reference to a python object in the js2py environment enabling them to escape the sandbox, bypass pyimport restrictions and execute arbitrary commands on the host. At the time of this writing no patch has been released and version 0.74 is the latest version of js2py which was released Nov 6, 2022. CVE-2024-39205 is a remote code execution vulnerability in Pyload versions 0.5.0b3.dev85 and below. It is an open-source download manager designed to automate file downloads from various online sources. Pyload is vulnerable because it exposes the vulnerable js2py functionality mentioned above on the /flash/addcrypted2 API endpoint. This endpoint was designed to only accept connections from localhost but by manipulating the HOST header we can bypass this restriction in order to access the API to achieve unauthenticated remote code execution.