A path traversal vulnerability in the Python setuptools library allows attackers with limited system access to write files outside the intended temporary directory by manipulating package download URLs. This flaw bypasses basic filename sanitization and can lead to unauthorized overwrites of important system files, creating opportunities for further compromise. While it doesn't expose data or require user interaction, it poses a high integrity risk and is especially concerning in environments that rely on automated package handling or internal tooling built on setuptools.

A flaw was found in the Python tarfile module. Processing a specially crafted tar archive, specifically an archive with negative offsets, can cause an infinite loop and deadlock. This issue results in a denial of service in the Python application using the tarfile module.