The Java and Python runtimes fail to properly validate FTP URLs, which can potentially allow attackers to punch holes through firewalls to access local networks.

Newly disclosed FTP injection vulnerabilities in Java and Python that are fueled by rather common XML External Entity (XXE) flaws allow for firewall bypasses.

The Java and Python runtimes fail to properly validate FTP URLs, which can potentially allow attackers to punch holes through firewalls to access local networks.