New Python URL Parsing Flaw Enables Command Injection Attacks

A high-severity security flaw has been disclosed in the Python URL parsing function that could be exploited to bypass domain or protocol filtering methods implemented with a blocklist, ultimately resulting in arbitrary file reads and command execution.
"urlparse has a parsing problem when the entire URL starts with blank characters," the CERT Coordination Center (CERT/CC) said in a Friday

attacks blocklist bypass characters command command injection domain exploited file flaw function high injection injection attacks parsing problem protocol python security security flaw severity ultimately url