CVE-2019-20916

A flaw was found in the pip package installer for Python when downloading or installing a remote package via a specified URL. Improper validation of the “Content-Disposition” HTTP response header makes a path traversal attack possible, leading to an arbitrary file overwrite. This flaw allows an attacker who controls a malicious server to execute arbitrary code on the system.

Mitigation

Avoid downloading or installing packages from potentially malicious servers via the command-line "pip download" or "pip install".