Related Vulnerabilities: CVE-2018-20225  

An issue was discovered in pip (all versions) because it installs the version with the highest version number, even if the user had intended to obtain a private package from a private index. This only affects use of the --extra-index-url option, and exploitation requires that the package does not already exist in the public index (and thus the attacker can put the package there with an arbitrary version number).

Severity High

Remote Yes

Type Arbitrary code execution

Description

An issue was discovered in pip (all versions) because it installs the version with the highest version number, even if the user had intended to obtain a private package from a private index. This only affects use of the --extra-index-url option, and exploitation requires that the package does not already exist in the public index (and thus the attacker can put the package there with an arbitrary version number).

AVG-1153 python-pip, python2-pip 20.0.2-1 High Vulnerable

https://cowlicks.website/posts/arbitrary-code-execution-from-pips-extra-index-url.html